How to convert several 'point' data to 'line' data?

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I am using QGIS V3.4. I have over 1000 data points situated between a start and finish point expressing the Depth of coverage (DOC) of a pipeline. I need to identify the places along the pipeline which have a DOC lower than 0.6m to that which has coverage greater than 0.6m. the figure below identifies this, with grey data points identifying DOC greater than 0.6m and blue data points showing less than 0.6m.



enter image description here



it may look like a line (but a closer up image identifies its just multiple dots close together).



enter image description here



I have tried converting the point to line data by using the points to path tool in the toolbox. This creates however a solid line from the start point to the finish point (as seen below) and doesn't include any other points within its attribute table. Additionally, it looks like it is plotted in a straight line rather than following the placement of the points.



enter image description here



I have also tried looking for the points2one plugin, but this doesn't seem to exist on QGIS v3.4.



I need to be able to create this line but identify it as areas lower than 0.6 DOC and areas greater than DOC, highlighted with different colours. Does anyone know how to do this?



Possible suggestion have been to use the points to path tool, however this creates issues as when I calculate it (knowing that it will arrange my data points from lowest to highest), I get as seen in the bottom figure, showing multiple lines.



I still haven't been able to solve my problem



enter image description hereenter image description here










share|improve this question




























    2















    I am using QGIS V3.4. I have over 1000 data points situated between a start and finish point expressing the Depth of coverage (DOC) of a pipeline. I need to identify the places along the pipeline which have a DOC lower than 0.6m to that which has coverage greater than 0.6m. the figure below identifies this, with grey data points identifying DOC greater than 0.6m and blue data points showing less than 0.6m.



    enter image description here



    it may look like a line (but a closer up image identifies its just multiple dots close together).



    enter image description here



    I have tried converting the point to line data by using the points to path tool in the toolbox. This creates however a solid line from the start point to the finish point (as seen below) and doesn't include any other points within its attribute table. Additionally, it looks like it is plotted in a straight line rather than following the placement of the points.



    enter image description here



    I have also tried looking for the points2one plugin, but this doesn't seem to exist on QGIS v3.4.



    I need to be able to create this line but identify it as areas lower than 0.6 DOC and areas greater than DOC, highlighted with different colours. Does anyone know how to do this?



    Possible suggestion have been to use the points to path tool, however this creates issues as when I calculate it (knowing that it will arrange my data points from lowest to highest), I get as seen in the bottom figure, showing multiple lines.



    I still haven't been able to solve my problem



    enter image description hereenter image description here










    share|improve this question


























      2












      2








      2








      I am using QGIS V3.4. I have over 1000 data points situated between a start and finish point expressing the Depth of coverage (DOC) of a pipeline. I need to identify the places along the pipeline which have a DOC lower than 0.6m to that which has coverage greater than 0.6m. the figure below identifies this, with grey data points identifying DOC greater than 0.6m and blue data points showing less than 0.6m.



      enter image description here



      it may look like a line (but a closer up image identifies its just multiple dots close together).



      enter image description here



      I have tried converting the point to line data by using the points to path tool in the toolbox. This creates however a solid line from the start point to the finish point (as seen below) and doesn't include any other points within its attribute table. Additionally, it looks like it is plotted in a straight line rather than following the placement of the points.



      enter image description here



      I have also tried looking for the points2one plugin, but this doesn't seem to exist on QGIS v3.4.



      I need to be able to create this line but identify it as areas lower than 0.6 DOC and areas greater than DOC, highlighted with different colours. Does anyone know how to do this?



      Possible suggestion have been to use the points to path tool, however this creates issues as when I calculate it (knowing that it will arrange my data points from lowest to highest), I get as seen in the bottom figure, showing multiple lines.



      I still haven't been able to solve my problem



      enter image description hereenter image description here










      share|improve this question
















      I am using QGIS V3.4. I have over 1000 data points situated between a start and finish point expressing the Depth of coverage (DOC) of a pipeline. I need to identify the places along the pipeline which have a DOC lower than 0.6m to that which has coverage greater than 0.6m. the figure below identifies this, with grey data points identifying DOC greater than 0.6m and blue data points showing less than 0.6m.



      enter image description here



      it may look like a line (but a closer up image identifies its just multiple dots close together).



      enter image description here



      I have tried converting the point to line data by using the points to path tool in the toolbox. This creates however a solid line from the start point to the finish point (as seen below) and doesn't include any other points within its attribute table. Additionally, it looks like it is plotted in a straight line rather than following the placement of the points.



      enter image description here



      I have also tried looking for the points2one plugin, but this doesn't seem to exist on QGIS v3.4.



      I need to be able to create this line but identify it as areas lower than 0.6 DOC and areas greater than DOC, highlighted with different colours. Does anyone know how to do this?



      Possible suggestion have been to use the points to path tool, however this creates issues as when I calculate it (knowing that it will arrange my data points from lowest to highest), I get as seen in the bottom figure, showing multiple lines.



      I still haven't been able to solve my problem



      enter image description hereenter image description here







      qgis qgis-plugins point line convert






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Jan 28 at 14:51







      Bodhi

















      asked Jan 28 at 11:29









      BodhiBodhi

      17612




      17612




















          2 Answers
          2






          active

          oldest

          votes


















          3














          in order to make Points to path tool works properly, you need to identify an order to the points so that the tool can follow the points based on the order you want:



          Here is an example:



          • Add field with integer type

          • Add numbers based on the order you want from the start until the end

          • Use point to path tool and order the line based on the field you created in the first step

          enter image description here



          Here is the output:



          enter image description here






          share|improve this answer























          • Would Converting points tom line(s) work in the same way?

            – Bodhi
            Jan 28 at 11:49











          • Points to path tool easier to use. You need just to identify the Order field without considering the Separation field which is not clear to me what this field means.

            – ahmadhanb
            Jan 28 at 11:56











          • Ok so using points to path, following your instruction, an example would be to give all the points with a DOC <0.6m and id number e.g 1 - 600, then the remaining points with a DOC > 0.6 and id number 601 - 1000, and then run Points to line twice according to the id number?

            – Bodhi
            Jan 28 at 12:00











          • Yes, this is what I will try to do, and I hope you will get the desired results.

            – ahmadhanb
            Jan 28 at 12:05


















          1














          I found the best way to solve this issue was to take the orginal excel sheet I was using and add two additional columns 1. Group & 2. Order. within the group column I indicated the length of data points used within the spread sheet e.g 1,2,3,4... 600. Within order I would paste 1 (indicating the start) for the whole column. Once completed, I would copy the data and paste it again at the end of the spread sheet. That way my 'group' column would repeat 1,2,3...600 again, but I would change my 'Order column' to consist of 2's (indicating the end of the string). After doing this I would sort the data by group and order (smallest to largest) resulting in my group and order column looking like the figure below. (KP indicates the distance points of the pipeline).



          enter image description here



          After creating the spreadsheet, I then added it as a delimited text file to QGIS, which created multiple data points. using these data points I ran points to path (situated in the processing toolbox) this then created lines which were seperated between each point (shown below, red line highliting the break between each point).



          enter image description here



          The attribute table should like like the figure below.



          enter image description here



          The attribute table as it stands does not have the necessary fields and values to plot DOC, therefore it is necessary to join the pipeline data poitns layer to the newely created line (path) layer. this is done by clicking on the 'Path/line layer' going to layer proprties then joins --> add vector join. then join to the data points layer, with a join field and target field which is a column within the excell sheets which are common in both layers. e.g group



          enter image description here



          this then will add multiple fields to the new line/path attribute table.



          Once created the data points layer can be unselected and using the Expression String Builder rule-based symbology can be used to identify lengths of pipeline which are below DOC (0.60m) and length of pipeline which are above (0.60m).



          The figure below indicates this. the red line shows DOC < 0.60M and the green line shows DOC > 0.60M



          enter image description here



          The final image indicates what the layer should look like in QGIS



          enter image description here






          share|improve this answer






















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            2 Answers
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            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            3














            in order to make Points to path tool works properly, you need to identify an order to the points so that the tool can follow the points based on the order you want:



            Here is an example:



            • Add field with integer type

            • Add numbers based on the order you want from the start until the end

            • Use point to path tool and order the line based on the field you created in the first step

            enter image description here



            Here is the output:



            enter image description here






            share|improve this answer























            • Would Converting points tom line(s) work in the same way?

              – Bodhi
              Jan 28 at 11:49











            • Points to path tool easier to use. You need just to identify the Order field without considering the Separation field which is not clear to me what this field means.

              – ahmadhanb
              Jan 28 at 11:56











            • Ok so using points to path, following your instruction, an example would be to give all the points with a DOC <0.6m and id number e.g 1 - 600, then the remaining points with a DOC > 0.6 and id number 601 - 1000, and then run Points to line twice according to the id number?

              – Bodhi
              Jan 28 at 12:00











            • Yes, this is what I will try to do, and I hope you will get the desired results.

              – ahmadhanb
              Jan 28 at 12:05















            3














            in order to make Points to path tool works properly, you need to identify an order to the points so that the tool can follow the points based on the order you want:



            Here is an example:



            • Add field with integer type

            • Add numbers based on the order you want from the start until the end

            • Use point to path tool and order the line based on the field you created in the first step

            enter image description here



            Here is the output:



            enter image description here






            share|improve this answer























            • Would Converting points tom line(s) work in the same way?

              – Bodhi
              Jan 28 at 11:49











            • Points to path tool easier to use. You need just to identify the Order field without considering the Separation field which is not clear to me what this field means.

              – ahmadhanb
              Jan 28 at 11:56











            • Ok so using points to path, following your instruction, an example would be to give all the points with a DOC <0.6m and id number e.g 1 - 600, then the remaining points with a DOC > 0.6 and id number 601 - 1000, and then run Points to line twice according to the id number?

              – Bodhi
              Jan 28 at 12:00











            • Yes, this is what I will try to do, and I hope you will get the desired results.

              – ahmadhanb
              Jan 28 at 12:05













            3












            3








            3







            in order to make Points to path tool works properly, you need to identify an order to the points so that the tool can follow the points based on the order you want:



            Here is an example:



            • Add field with integer type

            • Add numbers based on the order you want from the start until the end

            • Use point to path tool and order the line based on the field you created in the first step

            enter image description here



            Here is the output:



            enter image description here






            share|improve this answer













            in order to make Points to path tool works properly, you need to identify an order to the points so that the tool can follow the points based on the order you want:



            Here is an example:



            • Add field with integer type

            • Add numbers based on the order you want from the start until the end

            • Use point to path tool and order the line based on the field you created in the first step

            enter image description here



            Here is the output:



            enter image description here







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Jan 28 at 11:44









            ahmadhanbahmadhanb

            22.6k32053




            22.6k32053












            • Would Converting points tom line(s) work in the same way?

              – Bodhi
              Jan 28 at 11:49











            • Points to path tool easier to use. You need just to identify the Order field without considering the Separation field which is not clear to me what this field means.

              – ahmadhanb
              Jan 28 at 11:56











            • Ok so using points to path, following your instruction, an example would be to give all the points with a DOC <0.6m and id number e.g 1 - 600, then the remaining points with a DOC > 0.6 and id number 601 - 1000, and then run Points to line twice according to the id number?

              – Bodhi
              Jan 28 at 12:00











            • Yes, this is what I will try to do, and I hope you will get the desired results.

              – ahmadhanb
              Jan 28 at 12:05

















            • Would Converting points tom line(s) work in the same way?

              – Bodhi
              Jan 28 at 11:49











            • Points to path tool easier to use. You need just to identify the Order field without considering the Separation field which is not clear to me what this field means.

              – ahmadhanb
              Jan 28 at 11:56











            • Ok so using points to path, following your instruction, an example would be to give all the points with a DOC <0.6m and id number e.g 1 - 600, then the remaining points with a DOC > 0.6 and id number 601 - 1000, and then run Points to line twice according to the id number?

              – Bodhi
              Jan 28 at 12:00











            • Yes, this is what I will try to do, and I hope you will get the desired results.

              – ahmadhanb
              Jan 28 at 12:05
















            Would Converting points tom line(s) work in the same way?

            – Bodhi
            Jan 28 at 11:49





            Would Converting points tom line(s) work in the same way?

            – Bodhi
            Jan 28 at 11:49













            Points to path tool easier to use. You need just to identify the Order field without considering the Separation field which is not clear to me what this field means.

            – ahmadhanb
            Jan 28 at 11:56





            Points to path tool easier to use. You need just to identify the Order field without considering the Separation field which is not clear to me what this field means.

            – ahmadhanb
            Jan 28 at 11:56













            Ok so using points to path, following your instruction, an example would be to give all the points with a DOC <0.6m and id number e.g 1 - 600, then the remaining points with a DOC > 0.6 and id number 601 - 1000, and then run Points to line twice according to the id number?

            – Bodhi
            Jan 28 at 12:00





            Ok so using points to path, following your instruction, an example would be to give all the points with a DOC <0.6m and id number e.g 1 - 600, then the remaining points with a DOC > 0.6 and id number 601 - 1000, and then run Points to line twice according to the id number?

            – Bodhi
            Jan 28 at 12:00













            Yes, this is what I will try to do, and I hope you will get the desired results.

            – ahmadhanb
            Jan 28 at 12:05





            Yes, this is what I will try to do, and I hope you will get the desired results.

            – ahmadhanb
            Jan 28 at 12:05













            1














            I found the best way to solve this issue was to take the orginal excel sheet I was using and add two additional columns 1. Group & 2. Order. within the group column I indicated the length of data points used within the spread sheet e.g 1,2,3,4... 600. Within order I would paste 1 (indicating the start) for the whole column. Once completed, I would copy the data and paste it again at the end of the spread sheet. That way my 'group' column would repeat 1,2,3...600 again, but I would change my 'Order column' to consist of 2's (indicating the end of the string). After doing this I would sort the data by group and order (smallest to largest) resulting in my group and order column looking like the figure below. (KP indicates the distance points of the pipeline).



            enter image description here



            After creating the spreadsheet, I then added it as a delimited text file to QGIS, which created multiple data points. using these data points I ran points to path (situated in the processing toolbox) this then created lines which were seperated between each point (shown below, red line highliting the break between each point).



            enter image description here



            The attribute table should like like the figure below.



            enter image description here



            The attribute table as it stands does not have the necessary fields and values to plot DOC, therefore it is necessary to join the pipeline data poitns layer to the newely created line (path) layer. this is done by clicking on the 'Path/line layer' going to layer proprties then joins --> add vector join. then join to the data points layer, with a join field and target field which is a column within the excell sheets which are common in both layers. e.g group



            enter image description here



            this then will add multiple fields to the new line/path attribute table.



            Once created the data points layer can be unselected and using the Expression String Builder rule-based symbology can be used to identify lengths of pipeline which are below DOC (0.60m) and length of pipeline which are above (0.60m).



            The figure below indicates this. the red line shows DOC < 0.60M and the green line shows DOC > 0.60M



            enter image description here



            The final image indicates what the layer should look like in QGIS



            enter image description here






            share|improve this answer



























              1














              I found the best way to solve this issue was to take the orginal excel sheet I was using and add two additional columns 1. Group & 2. Order. within the group column I indicated the length of data points used within the spread sheet e.g 1,2,3,4... 600. Within order I would paste 1 (indicating the start) for the whole column. Once completed, I would copy the data and paste it again at the end of the spread sheet. That way my 'group' column would repeat 1,2,3...600 again, but I would change my 'Order column' to consist of 2's (indicating the end of the string). After doing this I would sort the data by group and order (smallest to largest) resulting in my group and order column looking like the figure below. (KP indicates the distance points of the pipeline).



              enter image description here



              After creating the spreadsheet, I then added it as a delimited text file to QGIS, which created multiple data points. using these data points I ran points to path (situated in the processing toolbox) this then created lines which were seperated between each point (shown below, red line highliting the break between each point).



              enter image description here



              The attribute table should like like the figure below.



              enter image description here



              The attribute table as it stands does not have the necessary fields and values to plot DOC, therefore it is necessary to join the pipeline data poitns layer to the newely created line (path) layer. this is done by clicking on the 'Path/line layer' going to layer proprties then joins --> add vector join. then join to the data points layer, with a join field and target field which is a column within the excell sheets which are common in both layers. e.g group



              enter image description here



              this then will add multiple fields to the new line/path attribute table.



              Once created the data points layer can be unselected and using the Expression String Builder rule-based symbology can be used to identify lengths of pipeline which are below DOC (0.60m) and length of pipeline which are above (0.60m).



              The figure below indicates this. the red line shows DOC < 0.60M and the green line shows DOC > 0.60M



              enter image description here



              The final image indicates what the layer should look like in QGIS



              enter image description here






              share|improve this answer

























                1












                1








                1







                I found the best way to solve this issue was to take the orginal excel sheet I was using and add two additional columns 1. Group & 2. Order. within the group column I indicated the length of data points used within the spread sheet e.g 1,2,3,4... 600. Within order I would paste 1 (indicating the start) for the whole column. Once completed, I would copy the data and paste it again at the end of the spread sheet. That way my 'group' column would repeat 1,2,3...600 again, but I would change my 'Order column' to consist of 2's (indicating the end of the string). After doing this I would sort the data by group and order (smallest to largest) resulting in my group and order column looking like the figure below. (KP indicates the distance points of the pipeline).



                enter image description here



                After creating the spreadsheet, I then added it as a delimited text file to QGIS, which created multiple data points. using these data points I ran points to path (situated in the processing toolbox) this then created lines which were seperated between each point (shown below, red line highliting the break between each point).



                enter image description here



                The attribute table should like like the figure below.



                enter image description here



                The attribute table as it stands does not have the necessary fields and values to plot DOC, therefore it is necessary to join the pipeline data poitns layer to the newely created line (path) layer. this is done by clicking on the 'Path/line layer' going to layer proprties then joins --> add vector join. then join to the data points layer, with a join field and target field which is a column within the excell sheets which are common in both layers. e.g group



                enter image description here



                this then will add multiple fields to the new line/path attribute table.



                Once created the data points layer can be unselected and using the Expression String Builder rule-based symbology can be used to identify lengths of pipeline which are below DOC (0.60m) and length of pipeline which are above (0.60m).



                The figure below indicates this. the red line shows DOC < 0.60M and the green line shows DOC > 0.60M



                enter image description here



                The final image indicates what the layer should look like in QGIS



                enter image description here






                share|improve this answer













                I found the best way to solve this issue was to take the orginal excel sheet I was using and add two additional columns 1. Group & 2. Order. within the group column I indicated the length of data points used within the spread sheet e.g 1,2,3,4... 600. Within order I would paste 1 (indicating the start) for the whole column. Once completed, I would copy the data and paste it again at the end of the spread sheet. That way my 'group' column would repeat 1,2,3...600 again, but I would change my 'Order column' to consist of 2's (indicating the end of the string). After doing this I would sort the data by group and order (smallest to largest) resulting in my group and order column looking like the figure below. (KP indicates the distance points of the pipeline).



                enter image description here



                After creating the spreadsheet, I then added it as a delimited text file to QGIS, which created multiple data points. using these data points I ran points to path (situated in the processing toolbox) this then created lines which were seperated between each point (shown below, red line highliting the break between each point).



                enter image description here



                The attribute table should like like the figure below.



                enter image description here



                The attribute table as it stands does not have the necessary fields and values to plot DOC, therefore it is necessary to join the pipeline data poitns layer to the newely created line (path) layer. this is done by clicking on the 'Path/line layer' going to layer proprties then joins --> add vector join. then join to the data points layer, with a join field and target field which is a column within the excell sheets which are common in both layers. e.g group



                enter image description here



                this then will add multiple fields to the new line/path attribute table.



                Once created the data points layer can be unselected and using the Expression String Builder rule-based symbology can be used to identify lengths of pipeline which are below DOC (0.60m) and length of pipeline which are above (0.60m).



                The figure below indicates this. the red line shows DOC < 0.60M and the green line shows DOC > 0.60M



                enter image description here



                The final image indicates what the layer should look like in QGIS



                enter image description here







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Feb 1 at 10:39









                BodhiBodhi

                17612




                17612



























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