How do I change Grid Size in R2013a?

How do I change or adjust the grid size? I am suppose to have a grid of .001 for x values less than 2. How would I go about doing that? This is my code for my graph

• x = (0:2*pi);
• y = sin(x);
• fig1 = plot(x,y)
• grid on
• xlabel('x-axis')
• ylabel('y-axis')

[Sasirekha]

Is the plot correct when the grid size is 5?

Answer 1

[Sven]

Hi Edgar,

You can set the XTick locations of an axis (or the current one via gca) directly:

tickValues = min(x):0.1:max(x);
set(gca,'XTick',tickValues)

Notice that I chose tick spacing of 0.1 and it is already a very very tight grid. Your request of having grid spacing of 0.001 is actually not very reasonable for this data as it would result in 6000 grid lines between 0 and 6. Your screen resolution is much lower than that so you're basically requesting 6 lines per pixel (ie, not possible).

You can also turn the XMinorGrid on, and it will put a lighter grid between your specified major tick locations. Note that you don't have 100% control over what lines will be shown on this grid. MATLAB chooses a "reasonable" number of lines between each tick to match the displayed size of the figure - usually 1, 2, or 5.

set(gca,'XTick',0:1:6, 'XMinorTick','on')

Hope this helped answer your question.