Re: Problem with appearance of plots

[Lennart O]

Ben Abbott wrote:
> 
> 
> On Feb 17, 2009, at 5:10 AM, Lennart O wrote:
> 
>> Ben Abbott wrote:
>>>
>>> On Feb 16, 2009, at 6:29 PM, Lennart O wrote:
>>>
>>>>
>>>> Hi I'm having a problem with plots that are not very pretty. It's
>>>> almost like
>>>> an old version of gnuplot is being used. The result looks very
>>>> crude. I
>>>> should mention that I am using Octave 3.0.1 on Ubuntu 8.10. I took
>>>> some
>>>> screenshots to show what I mean.
>>>>
>>>> Plot with Octave:
>>>> http://www.nabble.com/file/p22048113/octave.png
>>>>
>>>> Plot with Gnuplot:
>>>> http://www.nabble.com/file/p22048113/gnuplot.png
>>>>
>>>> Any idea how to fix this? Is it a problem with the Ubuntu package or
>>>> do I
>>>> need to change some settings in Octave?
>>>>
>>>> ps. Sorry about the images being so large.
>>>
>>> Octave is telling gnuplot to use the x11 terminal, and when you run
>>> gnuplot directly it is using the wxt terminal.
>>>
>>> Try ...
>>>
>>>     $ export GNUTERM=wxt
>>>     $ octave
>>>
>>> ... and then do some plots.
>>>
>>> Ben
>>>
>> Thank you very much, entering that into the terminal did the trick.  
>> Now I
>> just need to figure out how to change which numbers are printed on the
>> axises, theres' not enough room for them when doing a sublot. But  
>> that can
>> be done with gnuplot syntax directly in the m-file, right?
> 
> I think you're referring to the 2.1.x version of octave. Presently,  
> when using subplot, there are problems with the positioning of the  
> tick marks, axes labels, and titles.
> 
> If you are referring to the horizontal spacing of the x-axis tick- 
> marks and tick-labels, you can change the defaults by
> 
>       set (hax, 'xtick', xticks)
> 
> where hax is the handle to the axes and xticks is a vector containing  
> values for where you'd like the tick-mark labels placed.
> 
>> Also, how do I make the GNUTERM export more permanent so I don't  
>> have to
>> type it in every time I want to run Octave?
> 
> You can place it in the startup script for the shell that runs octave.  
> For example, if  you are running a bash shell, place it is ~/.bashrc.
> 
> Ben
> 
> p.s. There is presently a 3.0.3 version available that fixes some bugs  
> (soon there will be a 3.0.4). I recommend you update you installation.
> 
> 
> 
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> 
I am using version 3.0.1 but yes I should update. 

Thanks for your help, I got it all working now. 
I used: set(gca,'ytick',[-2 -1 0 1 2]). Not sure what 'gca' is, found it in
another thread, except that it apparently is a handle for an axis. Just
regurgitating what you said. :) Care to explain? 
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