How do I select the background layer, I've tried clicking it but it does not appear in the GIMP main window, does that mean it's not selected? On 13/10/2014 6:04 AM, Rolf Huehne wrote: > Am 11.10.14 19:21, schrieb Brenton Horne: >> Any ideas about the GIF-editing software because I've been using GIMP >> (the same software I use to animate the PNGs I get from Jmol) and I've >> tried to make the background transparent but it does not work. A free >> software would be ideal. >> > GIMP should be totally suitable to do this. > How did you try? > > For example this strategy should work: > > 1) select the background layer (usually the lowest one in the layer list) > 2) choose the "select by color" tool > 3) set the tool parameters to the following > a) deselect all checkboxes (e.g. no smoothing) > b) set the treshold to zero > c) set the mode to "replace current selection" > 4) select a background color pixel with the mouse > 5) invert the selection (e.g. CTRL-i on Windows/Linux or CMD-i on a Mac) > 6) copy and paste the selection as a new layer (e.g. CTRL-c CTRL-v or > CMD-c CMD-v, then click on "new layer" to settle the floating selection > as a new layer) > 7) move the pasted layer to the bottom > 8) delete the original background layer > > It might be necessary to repeat this for other layers also containing > the background color you want to make transparent. > > Before doing this the image should already be in "indexed" mode. This > should be the case if you already have an animated gif. Otherwise you > must change the mode first. > > Regards, > Rolf > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer > http://p.sf.net/sfu/Zoho > _______________________________________________ > Jmol-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/jmol-users >
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