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color palette logo WELCOME TO THE GRAPHICS VILLAGE PUMP!

This Graphics village pump aims to be technical support forum for all the local Labs, graphists (graphic artists), and volunteers interested in graphic works, and is a page where graphists and users from all the Labs can talk about graphics, tutorials, graphic software, help to build new Graphic Labs, etc. Also for exchanging opinions, ideas, protocols, and ways of improvement.

See also: Graphics abilities page | Graphic Tool | Project Insignia | Stroke Order Project | Current requests/discussions


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Diagonally striped pattern on svg country mapEdit

Hello guys,

I'm trying to fill countries with a diagonally striped pattern on a svg world map in this kind of style, however, just filling countries instead of regions would be fine. Colors should be able to be determined with the ability to create transparent stripes. There are instructions on how to entirely fill and circle countries, but the above feature is missing. Anyone here who could extend the instructions or comment? Would like to use this map outside of Wikipedia in case there are different rendering requirements.
— Preceding unsigned comment added by MiMoHo (talk • contribs) 09:42, 11 April 2018 (UTC)

Blank SVG image after uploadEdit

I have modified File:SevenSisterStates.svg file to create a few SVG maps using Inkscape. These images are rendered correctly in browser (Chrome, Firefox, IE), but after uploading to Commons the files look empty ((File:Assam district locator map Baksa.svg and others in Category:Locator maps of districts of Assam) where the original file still correctly renders (here). I am not sure what is happening, may be there is something going wrong in rendering the PNG images. Does anyone have any idea how to fix this? --SlowPhoton (talk) 10:13, 28 December 2018 (UTC)

@SlowPhoton: Please use Commons:Commons SVG Checker, and you will know the problem:
 — Johannes Kalliauer - Talk | Contributions 11:05, 28 December 2018 (UTC)
@SlowPhoton: is it on purpose that they have a transpraency? I removed it in File:Assam_district_locator_map_Baksa.svg, but not in the others.
@JoKalliauer: That was not on purpose. I did not realiser that there were transparency. Is there a quick way to fix this? --SlowPhoton (talk) 16:13, 28 December 2018 (UTC)
If you ungroup everything in inkscape it will remove the transparency (that's how I did it) I think it is related to mask2921 with opacity:0.97000002. I will check that /or do that.  — Johannes Kalliauer - Talk | Contributions 22:11, 28 December 2018 (UTC)
@SlowPhoton: I think now all files are fixed. Please check  — Johannes Kalliauer - Talk | Contributions 12:47, 3 February 2019 (UTC)

Resizing transparent PNG filesEdit

I have created as set of PNG transparencies for the Tai Tham script (e.g. Lanna vowel au cu ci.png because I need to display glyph variations that are not, and should probably not be, supported by Unicode and also unencoded characters. (The portability/quality of fonts also leaves a lot to be desired.) The glyphs are nominally black with a greyscale defined by the alpha channel. When the unresized glyph is displayed on a coloured background, I get the right appearance.

However, when I use '|xpx40' to shrink the images for sober use within tables, it seems that the thumbnail is generated by assuming the background is white; the thumbnail's white background then gives an unwanted contrast with the background of the cell in the table. I had expected the thumbnail to also have a transparent background.

How should I solve this problem? I can see several solutions:

  1. Raise a bug report/feature request on Phabricator - or is the problem intractable?
  2. I've missed a work-around of specifying a background colour for the image
  3. Generate and upload a strike of opaque images for each background colour (other than white) that is used
  4. Generate and upload a strike of transparent images for each chosen size

Which should I adopt? Options 2 and 3 could be defeated by the same cell having different background colours for different readers. --RichardW57 (talk) 23:18, 26 January 2019 (UTC)

@RichardW57: Would it be possible for you to generate SVGs instead of PNGs? I've been told that SVGs don't have these transparency problems and they look nice and anti-aliased at any size (assuming they are not just wrappers for PNG files). TilmannR (talk) 12:34, 28 January 2019 (UTC)
@TilmannR: My starting point is a PostScript master, but I can see how to automatically generate an SVG file from it, though I'm having trouble with the image size and am including far too much space at the bottom. My first effort, Lanna letter pa.svg, scales to give a proper transparency. I shall probably have to study the specifications. --RichardW57 (talk) 22:48, 29 January 2019 (UTC)
@RichardW57: After setting the width and height of the viewBox to the width and height of the image (while ignoring its unit of measurement "pt"), everything looks fine. Maybe that'll help you debug the problem. TilmannR (talk) 22:57, 29 January 2019 (UTC)
@TilmannR: Yes, thanks, I think I can now see what's going on and what went wrong. Now to automate the conversion! --RichardW57 (talk) 23:52, 29 January 2019 (UTC)
@TilmannR: Now automated for images using the Hariphunchai/Lamphun font. --RichardW57 (talk) 23:57, 5 February 2019 (UTC)

Fonts for SVGs on WCommonsEdit

Hello, I'm starting this conversation to understand the working of fonts in SVG (vector graphics) files on Wikimedia Commons. Starting from 21 February 2018, we will be starting a campaign in India to translate SVG files from Category:SVG diagrams in English into different Indian languages. The campaign page is at Commons:SVG Translation Campaign 2019 in India. While translating these files using Inkscape or any other software/tool, fonts are very crucial. When we use the default fonts, they maybe copyrighted. When uploaded to WCommons, it gets rendered to the closest available open-source font from the library (correct me if I am wrong). This may lead distortion of text or nearby paths in the vector file. To avoid these issues, we would like directly use the open source fonts that WCommons uses for SVG rendering. This will hopefully eliminate the distortion issues. It would extremely helpful if I can get the list of fonts used by WCommons for all the languages, and if possible, links to download these. Particularly for this campaign, our scope is limited to 20 languages as listed at Commons:SVG Translation Campaign 2019 in India/Organisers. Suggestions for the overall campaign are also welcome, thanks in advance. KCVelaga (talk · mail) 07:10, 3 February 2019 (UTC)

@KCVelaga: Please read meta:SVG_fonts, Help:SVG#Fonts_/_text, w:Wikipedia:SVG_help#font-family_issues — Johannes Kalliauer - Talk | Contributions 10:35, 3 February 2019 (UTC)

Import a vector imageEdit

Hello, I'm trying to import the left image from figure 1 (page 3) of this document in vector format. I managed to crop the figure with Inkscape but when I try to import the result to Commons, I always get an error that says "The XML in the imported file could not be parsed." I don't understand what's going on. Could someone import this image (in vector format) for me? Thank you in advance. Pamputt (talk) 12:16, 3 March 2019 (UTC)

@Pamputt: Hi. It seems like the PDF contains a special font, in which the first n glyphs correspond to various symbols. When Inkscape replaces those glyphs with text nodes, their content ends up being non-printable characters, which break the XML parsing. Inkscape has a PDF import mode (Poppler/Cairo import), which replaces all text with paths. It generates much larger, more difficult to edit SVGs, but circumvents this particular issue. TilmannR (talk) 14:30, 3 March 2019 (UTC)
Many thanks TilmannR. And thank you for the explanation. Pamputt (talk) 14:33, 3 March 2019 (UTC)

Black boxes in SVGsEdit

So I uploaded two maps: File:2016 OR HD-56.svg and File:2016 OR HD-54.svg. But, black boxes are shown over the text when they're converted to PNG. I guess this is a flow text issue and I did what they recommended to fix it (text->convert to text on Inkscape), but still it was the same. I'd appreciate if someone could try to fix this issue. MB298 (talk) 21:52, 17 March 2019 (UTC)

@MB298: The problem ist there is an empty <flowRootthat has to be removed. Empty flowRoots cant be marked by clicking on them (they are invisible) and some can't get converted by Inkscape.
You can save them as "Optimized SVG (*.svg)" and then you can use https://toolsadmin.wikimedia.org/tools/id/svgworkaroundbot.
https://toolsadmin.wikimedia.org/tools/id/svgworkaroundbot is quite new (came out on Monday) and can't process "Inkscape SVG (*.svg)" (might get implemented).
If you what to check if it worked you can use Commons:Commons_SVG_Checker (or https://tools.wmflabs.org/svgcheck/index.php)
If you have any problems I can help you. (How to repair, or repair it on my own.)
 — Johannes Kalliauer - Talk | Contributions 22:46, 17 March 2019 (UTC)
@JoKalliauer: I can't really figure out how to use your SVG tool. There isn't anywhere to upload the file. MB298 (talk) 02:38, 18 March 2019 (UTC)
@MB298: Sorry wrong link. Now the correct one: https://tools.wmflabs.org/svgworkaroundbot/  — Johannes Kalliauer - Talk | Contributions 07:41, 18 March 2019 (UTC)
Now I also implemented to process "Inkscape SVG (*.svg)", so now also the original file should work.  — Johannes Kalliauer - Talk | Contributions 16:47, 18 March 2019 (UTC)
Looks like someone already fixed the issue, but thanks. MB298 (talk) 22:18, 18 March 2019 (UTC)