change the scale on graph

2016 4 18
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更新时间：2019 2 27
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I've been researching this a while and can't find what I need - I can change the limits on the axis for graphs etc without a problem, but what I need is to change the numbers on the scale, without actually changing the scale of the graph (not sure if I'm explaining right). So I have a pcolor plot, but wish to change the numbers on the axes, without changing the axes limits (So I still want to show the same data, but with the axes reading different values) - for example, the current values multiplied by a constant. Thanks

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Veronica Lucchese
Veronica Lucchese 2019-2-27
编辑：Veronica Lucchese 2019-2-27
In matlab, the scale is called the c-axis. In order to manipulate the scale, you must manipulate the c-axis values
type in the command window:
caxis([0 0.1]) or whatever you want you scale limits to be

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 采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2016-4-18
编辑：Azzi Abdelmalek 2016-4-18

1 个投票

You mean to change the ticks of your axis. For example
x=0:10
y=cos(x)
plot(x,y)
number_of_ticks=5
xt=xlim
set(gca,'xtick',linspace(xt(1),xt(2),number_of_ticks))

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Jamie Shelley
Jamie Shelley 2016-4-18
Thanks, but I'm not really sure, I tried doing that but it didn't work. I have the plot but I want to edit the numbers on the axis, but using that code, it returned an error.
Azzi Abdelmalek
Azzi Abdelmalek 2016-4-18
编辑：Azzi Abdelmalek 2016-4-18
It depends on what you did, post what you have tried
Jamie Shelley
Jamie Shelley 2016-4-18
编辑：Azzi Abdelmalek 2016-4-18
x=randi(10,10)
pcolor(x)
number_of_ticks=5
xt=xlim
set(gca,'xtick',linspace(xt(1),xt(2),number_of_ticks))
So it changes the values on the axis, but it still goes from zero to ten, but I want it to read from zero to 500 but have it say 500 where it currently says 10 if you get me? Thanks
Azzi Abdelmalek
Azzi Abdelmalek 2016-4-18
n=numel(get(gca,'xtick')),
xt=arrayfun(@num2str,linspace(0,500,n),'un',0),
set(gca,'xticklabel',xt)
Jamie Shelley
Jamie Shelley 2016-4-18
Yes! Thank you so much, I've been trying to make it work for four hours!
Jamie Shelley
Jamie Shelley 2016-4-18
Sorry to be a pain, but I can't get it to work on a GUI, any ideas why please?
Azzi Abdelmalek
Azzi Abdelmalek 2016-4-18
Post the part of your code
Jamie Shelley
Jamie Shelley 2016-4-18
编辑：Azzi Abdelmalek 2016-4-18
handles.x=randi(10,10)
pcolor(handles.x)
handles.n=numel(get(gca,'xtick')),
handles.xt=arrayfun(@num2str,linspace(0,500,handles.n),'un',0),
set(gca,'xticklabel',handles.xt)
Azzi Abdelmalek
Azzi Abdelmalek 2016-4-18
This works for me
Jamie Shelley
Jamie Shelley 2016-4-18
I don't understand why it still won't work for me, I can't see what's wrong with it

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Kelly Kearney
Kelly Kearney 2016-4-18

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You can simply change the YTickLabel property:
ax = axes;
plot(1:10)
ax.YTickLabel = strtrim(cellstr(num2str(2 * ax.YTick')))

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Jamie Shelley
Jamie Shelley 2016-4-18
Thanks, but that didn't work, it just deleted the plot from the figure

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