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in QGIS, how do I make the selection color transparent?

I need to split a polygon and i want to see the layer underneath it. But I have to select the polygon in order to cut it, and when i do that it turns yellow!

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4 Answers 4

Reset to default
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In version 1.7, go to Preferences > Options > General tab (opened by default). Then, click the yellow color in front of Selection color and change the alpha canal value.

My Qgis version is in French, sorry if the translation is not exactly correct.

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  • Change it to which value?
    – vascobnunes
    Commented Jul 8, 2011 at 15:36
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    vascobnunes > it is set to 255 ... try 20 or 0 to make it fully transparent
    – simo
    Commented Jul 8, 2011 at 17:05
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    Alpha channel doesn't seem to affect it in the latest build. Might be a bug, will chase it up.
    – Nathan W
    Commented Jul 10, 2011 at 22:24
  • @Nathan > Sorry, can't help you. I'm currently working with 1.7. Maybe someone could confirm
    – simo
    Commented Jul 11, 2011 at 10:59
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For QGIS 2.6:

  1. Project Properties:

enter image description here

  1. General, Selection Color: enter image description here

  2. Reduce the Opacity:

enter image description here

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2

In QGis 2.2 you need to do the same edit the selection color in "Project Properties" (Win: SHIFT+CTRL+P) to make the selection transparent.

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IN 3.18 I tried to change the preference to make the selected item transparent but it doesn't work... but as it turns out, you don't have to select the polygon in order to use the split features tool and cut them.

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