What is the command to change the size of the tick marks on the axes of a graph?

I'm trying to make a graph larger, but using the magnifying glass zoom icon just changes the size of the axes, rather than making the graph itself larger and easier to read. Is there a command or procedure that can be used to zoom in on the graph so that it becomes bigger and clearer, or one that will make the graph become bigger relative to the measurements of the axes?

[dpb]

I'm having some difficulty in deciphering precisely what it is you're hoping for as a result??? Can you post a figure and comment on what it is you don't like and what you'd then prefer with it for specific reference?

[Bella Finkel]

This is the figure I'm working with. I've tried zooming in on it when it's saved as a picture but it just ends up pixelated.

[dpb]

If you save it, it then is limited by whatever resolution you used when saving. Do the zooming on the graph itself by using zoom or physically setting the axis limits -- looks here like

xlim([0.17 0.19]), ylim([0.70 0.72])

would get you started by centering the area and expanding the range drastically...

Answer 1

[Image Analyst]

If you want your tick to be longer and thicker, you can increase both the length AND thickness of the tick marks with the TickLength and LineWidth properties of the axes.

plot(1:10);
ax = gca;
properties(ax)
for k = .01 : 0.01 : .15
  ax.TickLength = [k, k]; % Make tick marks longer.
  ax.LineWidth = 100*k; % Make tick marks thicker.
  message = sprintf('This tick length = %.2f', k);
  uiwait(helpdlg(message));
end

Answer 2

[Image Analyst]

It's the TickLength property. Run this demo:

plot(1:10);
ax = gca;
properties(ax)
for k = .01 : 0.01 : .15
  ax.TickLength = [k, k];
  message = sprintf('This tick length = %.2f', k);
  uiwait(helpdlg(message));
end