Re: plotting uint8 data

[John W. Eaton]

On 16-Sep-2009, Dmitri A. Sergatskov wrote:

| On Wed, Sep 16, 2009 at 6:18 PM, Rob Mahurin <address@hidden> wrote:
| > On Wed, Sep 16, 2009 at 05:32:10PM -0500, Dmitri A. Sergatskov wrote:
| >> I have problems plotting uint8 type data. The data set seems to get
| >> truncated at index=256. I.e. if I do:
| >>
| >> x = uint8(100*(randn(1,300)+1));
| >> plot(x)
| >>
| >> then only first 256 data points gets plotted.
| >>
| >> This is with 3.2.2 and a recent 4.3 cvs gnuplot....
| >>
| >> Does anyone see the same?
| >
| > I see this with 3.2.3rc4.  A workaround is plot(double(x)).
| 
| I see it with 3.3.50 as well. I figure out the workaround, but I think
| it is a bug.
| It is somewhat strange to me that even
| plot(1:300, x) would fail.
| The data does not get disregarded, it is all plotted at x=256
| (this is more obvious if one does plot(x,"o;;") or similar).

This bug is only present in the gnuplot backend.  With 3.3.50, it
works as you would expect with the fltk backend.

I'm no longer putting any effort into the gnuplot backend, but I would
consider a contributed patch.

jwe