Lessening GPU processing power on MATLAB for plots

0
votes

I have a graph with a lot of points and I want to be able to look at certain intervals using xlim. The issue is, when I increment the interval, I have to rerun my program. This is taking a lot of processing power.

So basically, I make graph using plot, then use xlim. I don't want to keep doing this. Is there a way to plot only certain intervals using plot? That way, MATLAB doesn't have to process the whole vector.

For example

A=[1,2,3,4]

and 

B=[1,2,3,4]

If I do plot(A,B) then xlim(1,2) it would plot the graph first and then limit the interval. This takes a lot of processing power if you imagine a really massive complicated graph, thus I don't want to use plot using the normal method.

Is there a way to plot the graph on the interval x=[1,2] with only one function?

1
matlabplotmatlab-figure
How about plot(A(1:2), B(1:2))? - Adam
Why do you have to rerun your program? Save the vector you want, plot it, then use xlim and/or pan to move the view around. - Matt

1 Answers

1
votes

Update the XLimMode and NextPlot properties of your axes object before plotting. e.g. 

x = randn(128,1); 
y = randn(128,1); 
hax = axes(); 
hax.XLimMode = 'manual'; 
hax.XLim = [1,2]; 
hax.NextPlot = 'add'; 
h = plot(x,y,'o','Parent',hax)
hax.NextPlot = 'replace'; % optional