Re: Plotting

[martin_helm]

Michael Grossbach wrote:
> 
> martin_helm wrote:
>> 
>> 
>> asha g wrote:
>>>
>>> Thanks everyone for the help. I did add the hold on between both plots
>>> and
>>> got the desired result. Now did things change from Octave 3.0 to 3.03 as
>>> I
>>> could plot in Octave 3.0 without the hold in between the plots.
>>> Also, what if I have more than 2 plots. Where do I put the hold command?
>>> Asha 
>>>
>>>>> I am trying to plot two plots on the same plot :; 
>>>>> hold on 
>>>>> deltaT = 0.0035; niter = 10000; 
>>>>> t = linspace ( 0,deltaT*niter, niter)
>>>>> vv1 = vvvv(:,1);
>>>>> vvN = vvvv(:,N);
>>>>>
>>>>> plot(t,vv1,'r*')
>>>>> plot(t,vvN,'b')
>>>>>
>>>>> hold off
>>>>>
>>>>> I am only getting one plot in blue but the legend says
>>>> vv1. 
>>>>> I am using octave 3.03 in a Centos environment. 
>>>>>
>>>>> Both vv1 and vvN are generating values that are
>>>> different and should thus
>>>>> plot. Could someone help me. 
>>>>> Thanks
>>>>> Asha 
>>>>>
>>>>>
>>>>>       Check out the all-new
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>>>>>
>>>>>
>>>> Simply add a "hold on" after the first and before the
>>>> second plot command.
>>>>
>>>> - mh
>>>>
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>> 
>> I checked again with 3.0.3 and you need a hold on before every further
>> plot
>> command:
>> 
>> plot (...) 
>> hold on
>> plot(...)
>> hold on
>> plot(..)
>> hold on
>> plot(...)
>> 
>> and so on (somewhat ugly). With the development version 3.1.55 this is
>> not
>> necessary. 
>> I could not check with 3.0.5 since I did not install it.
>> 
>> - mh
>> 
> With Octave 3.0.3 on Windows everything works as expected, so
> 
> plot (...)
> hold on
> plot(...)
> plot(..)
> hold off
> 
> does show three graphs.
> 
> Michael
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> 

Just to be complete:

I downloaded 3.0.5 and compiled it (Opensuse 1.1, 64bit)

then the example from jwe

 hold on 
  x = -10:0.01:10; 
  plot (x, sin (x)); 
  plot (x, cos (x)); 
  hold off 

works also. So the different behaviour seems to be only in 3.0.3.


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