Closed chmike closed 5 months ago
Please provide a complete minimal reproducer of the problem. Note that renderers.NewGonumPlot
is not a function in plot, and may be doing work that includes embedding the fonts (see EmbedFonts
). Without the code, we cannot know.
Thank you very much for answering.
Looking inside the svg, I can see that the fonts are embedded.
I tried the example code given in the gnum plot package. I don't see where I can specify that I don't want the embedded fonts.
if err := p.Save(8*vg.Inch, 3*vg.Inch, filepath.Join(path, "comptes"+fileExt)); err != nil {
return errors.Wrap(err, "save SVG")
}
I tried the earlier method, where I can put an svg.Option structure argument. But the option to not embed fonts is apparently ignored.
I need to send many generated images in a mail. It wasn't a problem with 40KB images. It is impossible with 500KB images. I never had a problem with the font. So I don't need to embed the font.
Problem fixed.
I save plot files in two places. I changed only one place without seeing any effect on the file saved by the other place. My error.
I then removed any call and dependency to the tdewolff modules. I don't remember where I got that from and why.
I switched back to the example code provided in the gonum plot example given in the previous comment. I made sure to fix the code in the two places.
svg files are now 17KB.
Thank you very much for being so responsive.
I know the reason I switched to the tdewolff svg writer. It is because I wanted that the text in the SVG image could be selected and copied. It doesn't work anyway with some OS (macOS) but I left it as is. I found another way around this limitation.
While investigating the bug, I noticed that the tdewolff package had many indirect dependencies which in my opinion make the module brittle. I'm glad I got back to the gonum plot way to generate svg files. The files are remarkably small.
What are you trying to do?
I'm upgrading a program that created svg images. I had small svg files(40KB) and I now get huge svg files (500KB).
What did you do?
I upgraded all the dependencies of the plot module and had to change from
svg.Writer
torenderers.SVG()
.What did you expect to happen?
I expected to get small svg files as before.
What actually happened?
I get huge files.
I suspect that the fonts has been embedded in the file. I don't need this. Apparently renderes.SVG() accepts options as arguments. Unfortunately, the type is interface{}. I thus don't know what kind of options I can give as argument. I don't know where to find them. I couldn't find any code example for inspiration. I don't have mch time to explore.
Change the code into this without success. Files are still 500KB which is 10 times bigger than the prior version.
What version of Go and Gonum/plot are you using?
go version go1.22.1 darwin/arm64
From the go.mod file: gonum.org/v1/plot v0.14.0
Does this issue reproduce with the current master?
Didn't try.