How can I multiply axis values by 1000 without changing the data?

With the script shown below,

figure()
for CH = 2:33
    Y = (avg(:,CH) - avgBG(CH) + SP);
    hold on
    plot(avg(:,1), Y)
    xlim([0 0.3]); xlabel('Time (s)');
    ylim([-0.034 0.034]); ylabel('Position (m)');
    SP = SP + 2/1000;      
end

I've created this figure:

I want to change the Y-axis values on the figure to be multiplied by 1000.

I tried Yticks, but I don't think I've implemented it correctly. Any suggestions?

Answer 1

[Rik]

You can either multiply the y-values with 1000, or use the YTickLabels:

ticks=get(gca,'YTicks');%retrieve current ticks
ticks=ticks*1000;%multiply
ticks=cellfun(@num2str,tick,'UniformOutput',false);%convert to cellstr
set(gca,'YTickLabels',ticks)%set new tick labels

[Rik]

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Answer 2

[Rob Lander]

Here's another approach that seems to work (shown here for the case where you wish to change the labels for three axes):

ax = gca;
tick_scale_factor = 1000;
ax.XTickLabel = ax.XTick * tick_scale_factor;
ax.YTickLabel = ax.YTick * tick_scale_factor;
ax.ZTickLabel = ax.ZTick * tick_scale_factor;

A problem with this approach is that if you resize the figure this can cause the number of tick labels to change, which, in turn, will lead to incorrect label values. The only work-around that I know of to solve this problem is to re-exectute the code above after re-sizing.

[Nawfal Al-Zubaidi]

Perfect, this worked for me. Thank you!

Nawfal AZR-Smith