On Fri, Jan 18, 2008 at 03:06:44PM +, Andrew Ross wrote:
>
> To follow up my own response - it is not a fundamental libgd problem. I
> have a simple test case (attached) which does what I would expect. To
> compile this use "gcc test_alpha.c -lgd -o test_alpha".
>
> I can't currently see how
On Fri, Jan 18, 2008 at 09:44:43AM +, Andrew Ross wrote:
> On Thu, Jan 17, 2008 at 07:20:29PM -0800, Alan Irwin wrote:
> > On 2008-01-17 19:27- Andrew Ross wrote:
> >
> > >> [...]Andrew (Ross), do you confirm the above qualitative problem with
> > >> the png
> > >> result?
> > >
> > > Ala
On Thu, Jan 17, 2008 at 07:20:29PM -0800, Alan Irwin wrote:
> On 2008-01-17 19:27- Andrew Ross wrote:
>
> >> [...]Andrew (Ross), do you confirm the above qualitative problem with the
> >> png
> >> result?
> >
> > Alan, I can confirm that I observe exactly the same behaviour with both
> > debi
On 2008-01-17 19:27- Andrew Ross wrote:
>> [...]Andrew (Ross), do you confirm the above qualitative problem with the png
>> result?
>
> Alan, I can confirm that I observe exactly the same behaviour with both
> debian oldstable and ubuntu gutsy (latest stable).
>> [...]Anyhow, Andrew, the appa
On Jan 17, 2008, at 2:37 AM, Alan W. Irwin wrote:
> On 2008-01-16 22:47-0500 Hazen Babcock wrote:
>>
>> It looks like this driver scales alpha values in a different way
>> than the
>> cairo drivers.
>
> Hazen, could you comment the second page code of example 30? I am
> having
> trouble foll
On Wed, Jan 16, 2008 at 11:37:58PM -0800, Alan Irwin wrote:
>
> Hazen, could you comment the second page code of example 30? I am having
> trouble following exactly what it is supposed to do. From the looks of your
> pngcairo results, it appears your second page code imposes a large red
> square
On 2008-01-16 22:47-0500 Hazen Babcock wrote:
> On Jan 16, 2008, at 9:14 PM, Alan W. Irwin wrote:
>> [...] OTOH, it is mostly just a big red blob with some minor transparency
>> effects
>> so perhaps something is not working quite correctly for the second page
>> for
>> the png device. [...]
>
>
On Jan 16, 2008, at 9:14 PM, Alan W. Irwin wrote:
On 2008-01-16 20:03-0500 Hazen Babcock wrote:
I tried that, as you can see in the code in example 30, but it
does not work for me. I can still see faint black lines separating
the different colors. Does it work for you?
I attach the resu
On 2008-01-16 20:03-0500 Hazen Babcock wrote:
On Jan 16, 2008, at 1:51 AM, Alan W. Irwin wrote:
On 2008-01-15 23:05-0500 Hazen Babcock wrote:
[...] any ideas on how to get rid of the
lines plshades is drawing between each contour level? I was hoping
for a smooth gradient in alpha value but
On Jan 16, 2008, at 1:51 AM, Alan W. Irwin wrote:
> On 2008-01-15 23:05-0500 Hazen Babcock wrote:
>
>> [...] any ideas on how to get rid of the
>> lines plshades is drawing between each contour level? I was hoping
>> for a smooth gradient in alpha value but the effect is ruined
>> somewhat by the
On 2008-01-15 23:05-0500 Hazen Babcock wrote:
> [...] any ideas on how to get rid of the
> lines plshades is drawing between each contour level? I was hoping
> for a smooth gradient in alpha value but the effect is ruined
> somewhat by these lines.
See
http://plplot.sourceforge.net/docbook-manual
Hello,
I've added the functions necessary to manipulate the alpha values of
color table 1. These are:
plscmap1a(PLINT *, PLINT *, PLINT *, PLFLT *, PLINT);
plscmap1la(PLBOOL, PLINT, PLFLT *, PLFLT *, PLFLT *, PLFLT *, PLFLT
*, PLBOOL *);
And I've expanded example 30 to demonstrate the use o
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