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I want to create a negative buffer distance by adding a inner buffer zone inside the polygons;but when i use qgis to create this buffer with negative value the output layer don't display anything like show you this screenshots:

enter image description here

enter image description here

who have any idea to fix this problem ?

Ian Turton
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user1
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1 Answers1

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QGis is helping you out by pointing out that your layer is in degrees which means that the -0.1 distance you have asked for is in degrees not metres (or any other useful length unit). It's not clear what size your polygon is but if it is smaller than 0.1 degrees (roughly 10km) then there is no buffer to display.

So you need to reproject your layer to a planar projection. See this question for details of how to proceed.

Ian Turton
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  • thanks you, i have a vector layer with a lot of polygons so i cant import data with lat and long distinct for exemple of this polygone it's with size(4m) – user1 Jul 28 '21 at 11:09