Re: Empty plot

[John B. Thoo]

On Dec 17, 2010, at 12:40 PM, bpabbott wrote:

> On Dec 17, 2010, at 03:21 PM, "John B. Thoo" <address@hidden> wrote:
> 
>> 
>> On Dec 17, 2010, at 11:57 AM, bpabbott wrote:
>> 
>> > On Dec 17, 2010, at 02:24 PM, "John B. Thoo" <address@hidden> wrote:
>> > 
>> >> On Dec 17, 2010, at 8:26 AM, bpabbott wrote:
>> >> 
>> >> > On Dec 17, 2010, at 09:24 AM, "John B. Thoo" <address@hidden> wrote:
>> >> > 
>> >> >> On Dec 17, 2010, at 5:19 AM, Ben Abbott wrote:
>> >> >> 
>> >> >> > On Dec 16, 2010, at 10:39 PM, John B. Thoo wrote:
>> >> >> > 
>> >> >> >> Hi. I'm sorry if this is a FAQ, but I haven't been able to find an 
>> >> >> >> answer.
>> >> >> >> 
>> >> >> >> I'm using Octave 3.2.3 on Mac OS X 10.6.4 in X11. When I try to 
>> >> >> >> plot, I get an empty plot window and this:
>> >> >> >> 
>> >> >> >> octave-3.2.3:1> getenv ("GNUTERM")
>> >> >> >> ans = x11
>> >> >> >> octave-3.2.3:2> x = 0:0.1:pi;
>> >> >> >> octave-3.2.3:3> plot (x, sin(x))
>> >> >> >> octave-3.2.3:4> 
>> >> >> >> gnuplot> set palette file "-" binary record=64 using 1:2:3:4;
>> >> >> >> ^
>> >> >> >> line 0: Gray scale not sorted in gradient.
>> >> >> >> 
>> >> >> >> 
>> >> >> >> octave-3.2.3:4>
>> >> >> >> 
>> >> >> >> When I start gnuplot on its own, I see that I have Version 4.2 
>> >> >> >> patchlevel 5.
>> >> >> >> 
>> >> >> >> Any help would be appreciated. Thanks.
>> >> >> >> 
>> >> >> >> ---John.
>> >> >> >> 
>> >> >> >> -----------------------------------------------------------------------
>> >> >> >> "There are no atheists in foxholes."
>> >> >> >> ---Fr. William T. Cummings, M.M. (WWII, Philippines)
>> >> >> >> [_The Grunt Padre_, CMJ Marian Pub., p. 56]
>> >> >> > 
>> >> >> > http://atheism.about.com/od/atheismmyths/a/AtheistsFoxhole.htm
>> >> >> > 
>> >> >> > John, please tell us where you got your Octave. Was it from 
>> >> >> > MacPorts, Fink, Sourceforge, or somewhere else?
>> >> >> > 
>> >> >> > Also it is possible to have more than one version of gnuplot. Please 
>> >> >> > check which one Octave is using by typing ...
>> >> >> > 
>> >> >> > __gnuplot_version__
>> >> >> > 
>> >> >> > Since you're set up to use X11, please make sure the X11.app is 
>> >> >> > running before you try to plot. I've had some troubles in X11 on 
>> >> >> > MacOS X, and often have to quit X11 and start it again.
>> >> >> > 
>> >> >> > Ben
>> >> >> 
>> >> >> Hello, Ben. Thanks for your reply.
>> >> >> 
>> >> >> I'm using Thomas Treichi's binary of Octave from sourceforge. The 
>> >> >> thing is that I could plot in X11 using Thomas's previous version on 
>> >> >> my former PowerBook 12". It was only after upgrading to Octave 32.3 
>> >> >> i386 because I had gotten a MacBook Pro that plotting broke.
>> >> >> 
>> >> >> I had asked about this previously
>> >> >> 
>> >> >> <http://octave.1599824.n4.nabble.com/set-palette-file-quot-quot-binary-record-64-using-1-2-3-4-td2292036.html>
>> >> >> 
>> >> >> but didn't get any reply then. Unfortunately, I haven't been able to 
>> >> >> figure out the problem since, either.
>> >> >> 
>> >> >> By the way, this is what Octave returns for gnuplot version:
>> >> >> 
>> >> >> octave-3.2.3:1> __gnuplot_version__
>> >> >> ans = 4.2.5
>> >> >> octave-3.2.3:2>
>> >> >> 
>> >> >> Thanks again for your reply.
>> >> >> 
>> >> >> ---John.
>> >> > 
>> >> > I haven't encountered the specific problem you are seeing. However, 
>> >> > since you are using SnowLeopard, you'll want to read the link below, 
>> >> > before upgrading to 10.6.5.
>> >> > 
>> >> > http://sourceforge.net/projects/octave/files//Octave%20MacOSX%20Binary/2009-10-03%20binary%20of%20Octave%203.2.3/README_OSX1065txt/view
>> >> > 
>> >> > If you stick to 10.6.4, you might try installing a newer version of 
>> >> > gnuplot. Be sure to place it where the one from Thomas' bundled is ... 
>> >> > or use the "gnuplot_binary" function to point to the new one.
>> >> > 
>> >> > Ben
>> >> 
>> >> Thanks for the link, Ben. That will come in handy.
>> >> 
>> >> On a lark, I typed in an xterm window "which gnuplot" and got this:
>> >> 
>> >> [502] bash-3.2$ which gnuplot
>> >> /usr/bin/gnuplot
>> >> [503] bash-3.2$ /usr/bin/gnuplot 
>> >> 
>> >> G N U P L O T
>> >> Version 42 patchlevel 5 
>> >> last modified Mar 2009
>> >> System: Darwin 10.4.0
>> >> 
>> >> Copyright (C) 1986 - 1993, 1998, 2004, 2007 - 2009
>> >> Thomas Williams, Colin Kelley and many others
>> >> 
>> >> Type `help` to access the on-line reference manual.
>> >> The gnuplot FAQ is available from http://www.gnuplot.info/faq/
>> >> 
>> >> Send bug reports and suggestions to 
>> >> <http://sourceforge.net/projects/gnuplot>
>> >> 
>> >> 
>> >> Terminal type set to 'x11'
>> >> gnuplot> quit
>> >> [504] bash-3.2$
>> >> 
>> >> I had compiled this from source when I also compiled Octave from source 
>> >> (before I began to use Thomas's binary).
>> >> 
>> >> So, perhaps I'm not using the Gnuplot.app binary that is in the 
>> >> Applications folder with Octave.app. Could this be a problem? If it 
>> >> could, what would be a way to fix this? (What is the "gnuplot_binary" 
>> >> function?)
>> >> 
>> >> Thanks again.
>> >> 
>> >> ---John.
>> > 
>> > I recommend you uninstall the gnuplot you built from source. My 
>> > understanding is that the gnuplot makefile includes an "uninstall" target.
>> 
>> To do this, do I type
>> 
>> make uninstall gnuplot
> 
> I should note, that I haven't done an uninstall myself, but read some 
> references on various mail-lists.
> 
> When you built gnuplot you would have had a directory with the sources in it. 
> To install you would have typed the commands
> 
>       ./configure
>       make
>       make install
> 
> To uninstall, you'd type "make uninstall" from the same directory.
> 
>> from inside /usr/bin? (Sorry, I'm not sure about these Unix'y things. I know 
>> just enough to be dangerous, but not enough to be constructive.)
>> 
>> 
>> > I'm not recommending you not build gnuplot and/or octave from the sources. 
>> > I do that myself, and and would like to see other OSX users do so as well. 
>> > If you want to build either of those, I recommend using Fink or MacPorts 
>> > to supply the dependencies (MacPorts is a better choice for Octave's 
>> > dependencies). You may even want to create a local package for Fink to 
>> > allow for easy management of these apps (or a port file for MacPorts). If 
>> > you build independent of the Fink and MacPorts, I recommend you use 
>> > "/usr/local/..." as the installation prefix.
>> 
>> I'll keep that in mind. For the moment, I'm happy to use Thomas's binary. :-)
>> 
>> 
>> > The gnuplot_binary function is an octave function that lets to tell octave 
>> > which gnuplot binary you'd like to run.
>> > 
>> > See the help for more info.
>> > 
>> > help gnuplot_binary
>> > 
>> > To see which gnuplot Octave is using, type ...
>> > 
>> > system (sprintf ("which %s", gnuplot_binary))
>> 
>> octave-3.2.3:2> system (sprintf ("which %s",gnuplot_binary))
>> /Applications/Gnuplot.app/Contents/Resources/bin/gnuplot
>> ans = 0
>> octave-3.2.3:3>
>> 
>> So, apparently Octave is using Gnuplot.app in the Applications folder. 
>> (Should I still uninstall /usr/bin/gnuplot?)
>  
> 
> What happens if you ...
> 
>       gnuplot_binary ("/usr/bin/gnuplot")
>       close all
>       plot (1:10)
> 
> Ben

I get

octave-3.2.3:1> gnuplot_binary ("/usr/bin/gnuplot")
octave-3.2.3:2> close all
octave-3.2.3:3> plot (1:10)
octave-3.2.3:4> 
gnuplot> set palette file "-" binary record=64 using 1:2:3:4;
                                                            ^
         line 0: Gray scale not sorted in gradient.


octave-3.2.3:4>


---John.

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