2.2.21. Change geometry for a group of layers

The tool changes the geometry of features in all the layers of a group in Web GIS.

Three modes are available:

  • Delete - the tool deletes the selected features. The selection is based on the specified values of a layer’s attribute field;

  • Add - the tool adds new features from the uploaded ESRI Shapefile. The structures of the file and the layer must match. Otherwise, the tool will not be able to add new features;

  • Change - the tool replaces the geometry value for features with the geometries from the uploaded Shapefile. The selection is based on the specified values of a layer’s attribute field. The attribute name in the SHP file and the Web GIS layer must match.

Inputs:

  • Web GIS address. Example: https://sandbox.nextgis.com.

  • Login. NextGIS ID or login of a user who has write access to the resource group;

  • Password of that user;

  • Group resource ID. ID of the Web GIS resource that contains the layer group;

  • Source field. The name of the source field by which objects are searched.

  • Mode. Enter DELETE, ADD or CHANGE;

  • Initial value. The value of the field by which objects are selected. If you need to specify multiple values, use a comma as a separator. The parameter is required in the Delete and Change modes.

  • First year. Start of time range (optional).

  • Last year. End of time range (optional parameter).

  • Select SHP file. File upload is required in Add and Change modes.

Note

Start year and end year are optional parameters. These parameters allow you to limit the time range for the selected layers. To use these parameters, you must make sure that the time ranges are indicated in the names of the layers of the Web GIS resource. For example, in layer 1245_1246_earl_v.1.0 1245 and 1246 the years are indicated. If these parameters are in use, you need to enter three or four digit values. Other parameters are required.

Outputs:

  • A CSV file that contains data on the selected mode, the source field and its value, a list of hyperlinks to features that have been changed. If there are errors, they will also be indicated in this file.

../../_images/geometry_changer_result.png

Pic. 2.14. Report example

Launch tool: https://toolbox.nextgis.com/t/geometry_changer

Try it out using our sample:

Download input dataset to test the instrument. Step-by-step instructions included.

Get the output to additionally check the results.