-dpng gives "invalid command"

[John B. Thoo]

On Jul 10, 2009, at 11:55 AM, Thomas Treichl wrote:

>> Yes, I compiled gnuplot myself.  (I guess that was a mistake.)   
>> Would the easiest thing for me to do now be to install gnuplot  
>> from your octave-3.2.0-ppc.dmg?
>> If I drag-and-drop gnuplot from the .dmg into my Applications  
>> folder, would I then have to do anything in particular to use it  
>> instead of my previous installation?
>> Thanks again.
>> ---John.
>
> Hi John,
>
> why a mistake? From my point of view it is good if you try to  
> compile things for yourself. You just need to set up some more  
> libraries before compiling Gnuplot.
>
> Suggestion: If you already use Fink or MacPorts then this might be  
> a better solution to install Gnuplot that way.

I didn't use Fink or MacPorts for this.  (I do use Fink for other  
things, like xfig). I d/l'd the gnuplot source from <http:// 
gnuplot.sourceforge.net/> and compiled it.  If I wanted to, how would  
I have to re-d/l the source and compile it again, but against more  
libraries?  How would I select more libraries?


> If you have none of those or prefer Gnuplot.app beside others you  
> can also use Gnuplot.app, yes. There nearly is nothing more to do:  
> Drag'n'Drop Gnuplot.app from the *dmg to your Applications folder  
> and then set another link to use Gnuplot.app from command line, too  
> (maybe you should remove or rename or uninstall /usr/local/bin/ 
> gnuplot* before):
>
>   sudo ln -s /Applications/Gnuplot.app/Contents/Resources/bin/ 
> gnuplot /usr/local/bin/gnuplot
>
> Finally just type 'gnuplot' in Terminal.app and check once again  
> 'show version long'. Start your Octave and check
>
>   octave-3.2.0:1> system ('which gnuplot')

Neat.  Thanks.

Btw, my apologies to y'all on the list for all this, which, I guess,  
is not strictly Octave stuff.  Thanks for your indulgence.

---John.