* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
@ 2019-05-30 15:11 ` voidlinux-github
2019-05-30 20:06 ` voidlinux-github
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-05-30 15:11 UTC (permalink / raw)
To: ml
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New comment by jnbr on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-497365248
Comment:
It works (at least this [example](http://gnuplot.sourceforge.net/demo/rgba_lines.html))with `gnuplot-wx` and `gnuplot-qt` with terminal type respectively `wx` or `qt` and also with terminal type `pngcairo`.
I don't know why `pngcairo` is missing in `gnuplot`.
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
2019-05-30 15:11 ` gnuplot doesn't use alpha for lines voidlinux-github
@ 2019-05-30 20:06 ` voidlinux-github
2019-05-30 20:48 ` voidlinux-github
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-05-30 20:06 UTC (permalink / raw)
To: ml
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New comment by TOertel on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-497467133
Comment:
Confirmed. gnuplot-wx & gnuplot-qt both work when displaying to X.
However, they all fail when drawing to png (and jpg).
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
2019-05-30 15:11 ` gnuplot doesn't use alpha for lines voidlinux-github
2019-05-30 20:06 ` voidlinux-github
@ 2019-05-30 20:48 ` voidlinux-github
2019-05-30 21:03 ` voidlinux-github
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-05-30 20:48 UTC (permalink / raw)
To: ml
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New comment by jnbr on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-497480789
Comment:
png works for me with `set terminal pngcairo`
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
` (2 preceding siblings ...)
2019-05-30 20:48 ` voidlinux-github
@ 2019-05-30 21:03 ` voidlinux-github
2019-05-30 21:19 ` voidlinux-github
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-05-30 21:03 UTC (permalink / raw)
To: ml
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New comment by TOertel on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-497485226
Comment:
Confirmed. `set terminal pngcairo` also works correctly for me.
Can you confirm that the cases I've outlined *don't* work for you as well?
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
` (3 preceding siblings ...)
2019-05-30 21:03 ` voidlinux-github
@ 2019-05-30 21:19 ` voidlinux-github
2019-05-31 11:15 ` voidlinux-github
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-05-30 21:19 UTC (permalink / raw)
To: ml
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New comment by jnbr on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-497490305
Comment:
Yes, it does not work with x11 or png terminal.
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
` (4 preceding siblings ...)
2019-05-30 21:19 ` voidlinux-github
@ 2019-05-31 11:15 ` voidlinux-github
2019-05-31 11:32 ` voidlinux-github
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-05-31 11:15 UTC (permalink / raw)
To: ml
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New comment by jnbr on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-497672912
Comment:
Anything left to do here or can this be closed?
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
` (5 preceding siblings ...)
2019-05-31 11:15 ` voidlinux-github
@ 2019-05-31 11:32 ` voidlinux-github
2019-06-02 19:47 ` [ISSUE] [CLOSED] " voidlinux-github
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-05-31 11:32 UTC (permalink / raw)
To: ml
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New comment by TOertel on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-497677228
Comment:
Do we have any evidence this is actually an upstream bug vs something in the build?
( I guess I don't know how these sorts of things are handled, in general. )
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: [ISSUE] [CLOSED] gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
` (6 preceding siblings ...)
2019-05-31 11:32 ` voidlinux-github
@ 2019-06-02 19:47 ` voidlinux-github
2019-06-02 19:47 ` voidlinux-github
2019-06-03 12:47 ` voidlinux-github
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-06-02 19:47 UTC (permalink / raw)
To: ml
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Closed issue by TOertel on void-packages repository
https://github.com/void-linux/void-packages/issues/12035
Description: ### System
* xuname:
Void 4.19.36_1 x86_64 AuthenticAMD notuptodate rrFFFF
(Everything is up to date except the kernel)
* package:
gnuplot-5.2.6_1 (at least)
### Expected behavior
Drawing lines with alpha color should show as translucent.
### Actual behavior
Drawing lines are always 100% opaque.
### Steps to reproduce the behavior
````
gnuplot
plot x lw 10, -x lw 10 lc rgb "#77000000"
plot x lw 10, -x lw 10 lc rgb "#FF000000"
plot x lw 10, -x lw 10 lc rgb "#00000000"
````
These should all display differently, but display the same. Doing `set term png; set output "test.png"` and re-running the above generate the same incorrect result.
Alpha channel for lines was added in 5.2, I haven't found any other examples of alpha not working on the internet, so it seems like it's just void (or perhaps just me).
gnuplot-wx and gnuplot-qt both correctly display the alpha when drawing to X. All commands fail when terminal is png or jpeg.
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
` (7 preceding siblings ...)
2019-06-02 19:47 ` [ISSUE] [CLOSED] " voidlinux-github
@ 2019-06-02 19:47 ` voidlinux-github
2019-06-03 12:47 ` voidlinux-github
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-06-02 19:47 UTC (permalink / raw)
To: ml
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New comment by jnbr on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-498059883
Comment:
Not sure what exactly you are referring to as a potential bug.
In case you are referring to alpha not working in png and x11, I think this is the intended behavior by upstream. You can discuss this with upstream.
In case you are referring to the `gnuplot` package not having `pngcairo`, this might be a packaging bug, but I don't see it as a real problem because we have `gnuplot-qt` and `gnuplot-wx`.
I'm closing this. Feel free to reopen if you think different about it.
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: gnuplot doesn't use alpha for lines
2019-05-30 14:13 [ISSUE] gnuplot doesn't use alpha voidlinux-github
` (8 preceding siblings ...)
2019-06-02 19:47 ` voidlinux-github
@ 2019-06-03 12:47 ` voidlinux-github
9 siblings, 0 replies; 11+ messages in thread
From: voidlinux-github @ 2019-06-03 12:47 UTC (permalink / raw)
To: ml
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New comment by TOertel on void-packages repository
https://github.com/void-linux/void-packages/issues/12035#issuecomment-498241816
Comment:
I was referring to the different behaviors, alpha not working in png, jpeg and x11. I have no evidence that this is "intended behavior".
So, for now, I've opened an upstream bug: https://sourceforge.net/p/gnuplot/bugs/2177
^ permalink raw reply [flat|nested] 11+ messages in thread