eclipsed_by_the_moon
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Merging spatially separated polygons into one feature in QGIS
Accepted answer
12 votes

Check the corresponding geoalgorithm in the Processing Toolbox (Ctrl+Shift+T). For QGIS 3 : "Promote to multipart" For QGIS 2 : "Singleparts to multipart"

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Removing overlapping part of polygons using QGIS?
Accepted answer
11 votes

You can use the 'Check Geometries' plugin (Vector/Geometry Tools/Check Geometries) to remove overlapping areas.

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Switching line direction in QGIS
6 votes

Based on Nathan's post I've created a processing script to reverse the direction of features: #!/usr/bin/env python # -*- coding: utf-8 -*- # define Interface ##QGIS tools (QGIS 2.x)=group ##Reverse ...

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How to set the transparency for multiple layers or add a global transparancy preference?
5 votes

The easiest way to do this is by using layer styles. Just set the transparency of a single layer to 27% and copy/paste the style to all other layers. You can paste a style to multiple layers at once. ...

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How to calculate the building coverage ratio (BCR) if buildings overlap with two or more land parcels?
Accepted answer
3 votes

Thanks to jbalk I've found a query that solves my problem. I have to split the buildings in a subquery using ST_Intersection(). CREATE OR REPLACE VIEW public.v_bcr AS SELECT row_number() over() ...

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How can I remove easily vector leftovers within dissolved polygons?
2 votes

The 'Check Geometries' plugin is really helpful to fix many kinds of geometry errors:

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How to create a table which showing attributes from one layer and another?
2 votes

There is a helpful plugin doing spatial joins quickly. It's called RefFunctions: After installing the plugin you just have to add a new field to your point layer. Then enter the following expression: ...

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Is it possible to arrange multiple attribute tables in tabs in QGIS?
2 votes

As far as I know this is not possible. See also: http://hub.qgis.org/issues/6796

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What's a good way to implement an 'Attributes to keep' option in a QGIS processing script?
0 votes

Perhaps this can be solved by some Python similar to this: string = 'att-1, att_2, att3,' # remove space string = string.replace(' ', '') # remove ',' at start/end if string[:1] == ',': string =...

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How to position a guide at a specific point in the Print Composer?
0 votes

You have to open your .qgis file in a text editor to position guide lines exactly. The x and y values can be found in the 'SnapLine' tags. See also: http://hub.qgis.org/issues/13950

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Loading label information from a QGIS syle file (.qml)?
0 votes

As far as I know copy and paste styles between different project files is the only workaround for this issue in QGIS 2.14.3. See also: http://hub.qgis.org/issues/14224

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