Getting particular feature using expression in PyQGIS? [closed]

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How to get a particular feature using an expression in PyQGIS?

For example, there are 100 houses (with 100 entries in Attributes Table). I want to get only one house with field name ("name"=="John's House") and make get selected that feature in the map view.

edited Mar 22 at 9:06

Taras

2,3003729

asked Mar 15 at 7:05

Devenepali

302

closed as off-topic by ahmadhanb, Jochen Schwarze, wetland, BERA, whyzar Mar 15 at 13:42

This question appears to be off-topic. The users who voted to close gave this specific reason:

"When seeking help to debug/write/improve code always provide the desired behavior, a specific problem/error and the shortest code (as formatted text, not pictures) needed to reproduce it in the question body. Providing a clear problem statement and a code attempt helps others to help you." – ahmadhanb, Jochen Schwarze, BERA, whyzar

If this question can be reworded to fit the rules in the help center, please edit the question.

What have you tried by so far?

– Taras
Mar 15 at 7:09

2

Possible duplicate one more time: gis.stackexchange.com/questions/131158/…. Please take a few minutes to search the web or GIS Stack Exchange before you ask a question.

– Stefan
Mar 15 at 8:20

Thanks, @Stefan, I do not know why but I have not seen that thread

– Taras
Mar 15 at 8:26

Possible duplicate of How to select features using an expression with pyqgis?

– wetland
Mar 15 at 10:22

2

@wetland Possible duplicate of my comment ;).

– Stefan
Mar 15 at 11:02

add a comment |

How to get a particular feature using an expression in PyQGIS?

For example, there are 100 houses (with 100 entries in Attributes Table). I want to get only one house with field name ("name"=="John's House") and make get selected that feature in the map view.

edited Mar 22 at 9:06

Taras

2,3003729

asked Mar 15 at 7:05

Devenepali

302

closed as off-topic by ahmadhanb, Jochen Schwarze, wetland, BERA, whyzar Mar 15 at 13:42

This question appears to be off-topic. The users who voted to close gave this specific reason:

"When seeking help to debug/write/improve code always provide the desired behavior, a specific problem/error and the shortest code (as formatted text, not pictures) needed to reproduce it in the question body. Providing a clear problem statement and a code attempt helps others to help you." – ahmadhanb, Jochen Schwarze, BERA, whyzar

If this question can be reworded to fit the rules in the help center, please edit the question.

What have you tried by so far?

– Taras
Mar 15 at 7:09

2

Possible duplicate one more time: gis.stackexchange.com/questions/131158/…. Please take a few minutes to search the web or GIS Stack Exchange before you ask a question.

– Stefan
Mar 15 at 8:20

Thanks, @Stefan, I do not know why but I have not seen that thread

– Taras
Mar 15 at 8:26

Possible duplicate of How to select features using an expression with pyqgis?

– wetland
Mar 15 at 10:22

2

@wetland Possible duplicate of my comment ;).

– Stefan
Mar 15 at 11:02

add a comment |

How to get a particular feature using an expression in PyQGIS?

For example, there are 100 houses (with 100 entries in Attributes Table). I want to get only one house with field name ("name"=="John's House") and make get selected that feature in the map view.

edited Mar 22 at 9:06

Taras

2,3003729

asked Mar 15 at 7:05

Devenepali

302

How to get a particular feature using an expression in PyQGIS?

For example, there are 100 houses (with 100 entries in Attributes Table). I want to get only one house with field name ("name"=="John's House") and make get selected that feature in the map view.

pyqgis select-by-attribute

edited Mar 22 at 9:06

Taras

2,3003729

asked Mar 15 at 7:05

Devenepali

302

edited Mar 22 at 9:06

Taras

2,3003729

asked Mar 15 at 7:05

Devenepali

302

edited Mar 22 at 9:06

Taras

2,3003729

edited Mar 22 at 9:06

Taras

2,3003729

edited Mar 22 at 9:06

Taras

2,3003729

asked Mar 15 at 7:05

Devenepali

302

asked Mar 15 at 7:05

Devenepali

302

asked Mar 15 at 7:05

Devenepali

302

closed as off-topic by ahmadhanb, Jochen Schwarze, wetland, BERA, whyzar Mar 15 at 13:42

This question appears to be off-topic. The users who voted to close gave this specific reason:

"When seeking help to debug/write/improve code always provide the desired behavior, a specific problem/error and the shortest code (as formatted text, not pictures) needed to reproduce it in the question body. Providing a clear problem statement and a code attempt helps others to help you." – ahmadhanb, Jochen Schwarze, BERA, whyzar

If this question can be reworded to fit the rules in the help center, please edit the question.

closed as off-topic by ahmadhanb, Jochen Schwarze, wetland, BERA, whyzar Mar 15 at 13:42

This question appears to be off-topic. The users who voted to close gave this specific reason:

"When seeking help to debug/write/improve code always provide the desired behavior, a specific problem/error and the shortest code (as formatted text, not pictures) needed to reproduce it in the question body. Providing a clear problem statement and a code attempt helps others to help you." – ahmadhanb, Jochen Schwarze, BERA, whyzar

If this question can be reworded to fit the rules in the help center, please edit the question.

What have you tried by so far?

– Taras
Mar 15 at 7:09

2

Possible duplicate one more time: gis.stackexchange.com/questions/131158/…. Please take a few minutes to search the web or GIS Stack Exchange before you ask a question.

– Stefan
Mar 15 at 8:20

Thanks, @Stefan, I do not know why but I have not seen that thread

– Taras
Mar 15 at 8:26

Possible duplicate of How to select features using an expression with pyqgis?

– wetland
Mar 15 at 10:22

2

@wetland Possible duplicate of my comment ;).

– Stefan
Mar 15 at 11:02

add a comment |

What have you tried by so far?

– Taras
Mar 15 at 7:09

2

Possible duplicate one more time: gis.stackexchange.com/questions/131158/…. Please take a few minutes to search the web or GIS Stack Exchange before you ask a question.

– Stefan
Mar 15 at 8:20

Thanks, @Stefan, I do not know why but I have not seen that thread

– Taras
Mar 15 at 8:26

Possible duplicate of How to select features using an expression with pyqgis?

– wetland
Mar 15 at 10:22

2

@wetland Possible duplicate of my comment ;).

– Stefan
Mar 15 at 11:02

What have you tried by so far?

– Taras
Mar 15 at 7:09

Possible duplicate one more time: gis.stackexchange.com/questions/131158/…. Please take a few minutes to search the web or GIS Stack Exchange before you ask a question.

– Stefan
Mar 15 at 8:20

Thanks, @Stefan, I do not know why but I have not seen that thread

– Taras
Mar 15 at 8:26

Possible duplicate of How to select features using an expression with pyqgis?

– wetland
Mar 15 at 10:22

@wetland Possible duplicate of my comment ;).

– Stefan
Mar 15 at 11:02

add a comment |

1 Answer
1

active

oldest

votes

layer = iface.activeLayer()

layer.selectByExpression('"name"='John's House'', QgsVectorLayer.SetSelection)

selection = layer.selectedFeatures()

print(len(selection))

References:

PyQGIS developer cookbook | 5.3 Selecting features

How to select features using an expression with pyqgis?

edited Mar 15 at 8:27

answered Mar 15 at 7:12

Taras

2,3003729

add a comment |

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

layer = iface.activeLayer()

layer.selectByExpression('"name"='John's House'', QgsVectorLayer.SetSelection)

selection = layer.selectedFeatures()

print(len(selection))

References:

PyQGIS developer cookbook | 5.3 Selecting features

How to select features using an expression with pyqgis?

edited Mar 15 at 8:27

answered Mar 15 at 7:12

Taras

2,3003729

add a comment |

layer = iface.activeLayer()

layer.selectByExpression('"name"='John's House'', QgsVectorLayer.SetSelection)

selection = layer.selectedFeatures()

print(len(selection))

References:

PyQGIS developer cookbook | 5.3 Selecting features

How to select features using an expression with pyqgis?

edited Mar 15 at 8:27

answered Mar 15 at 7:12

Taras

2,3003729

add a comment |

layer = iface.activeLayer()

layer.selectByExpression('"name"='John's House'', QgsVectorLayer.SetSelection)

selection = layer.selectedFeatures()

print(len(selection))

References:

PyQGIS developer cookbook | 5.3 Selecting features

How to select features using an expression with pyqgis?

edited Mar 15 at 8:27

answered Mar 15 at 7:12

Taras

2,3003729

layer = iface.activeLayer()

layer.selectByExpression('"name"='John's House'', QgsVectorLayer.SetSelection)

selection = layer.selectedFeatures()

print(len(selection))

References:

PyQGIS developer cookbook | 5.3 Selecting features

How to select features using an expression with pyqgis?

edited Mar 15 at 8:27

answered Mar 15 at 7:12

Taras

2,3003729

edited Mar 15 at 8:27

answered Mar 15 at 7:12

Taras

2,3003729

answered Mar 15 at 7:12

Taras

2,3003729

answered Mar 15 at 7:12

Taras

2,3003729

add a comment |

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