semilogx plot, scaling problem.

When I use the semilogx syntax with X axis to be scaled.

I used semilogx(parameter). I get the result like in the picture attached, but I intended to 100 , 10 , 1 , 0.1 , 0.01 micrometers in the X axis. Can I manually adjust the scale. If so how?

Answer 1

[Image Analyst]

Use xlim() to set the right and left edges of the graph. If you want 1 on the left and 100 as the max value on the right (which means you will crop off much of the data):

xlim([1, 100]);

Answer 2

[the cyclist]

I'm not sure I understand your intent.

Do you mean that you wanted the plotted data to go from larger to smaller values? If so, maybe you want

set(gca,'XDir','reverse')

Do you mean that you wanted the x-axis labeled with whole numbers, rather than exponential notation? If so, maybe you want

set(gca,'XTick',[1 10 100 100])
set(gca,'XTickLabel',{'1','10','100','1000'})

I'm not sure why you mention 0.1 or 0.01, because none of your X data seems to be in that range.

Please clarify by editing your question, or adding a comment to my answer.

[adrooney]

Thank u for the answer. What I meant was instead of going till 1000 right side of the axis. I want the upperlimit to be till 100 and the lower limit starting from 0.01 instead of 10^0 or 1.

And thanks for the reverse command it worked. But how to set the limits on the x axis or how to change those 10^0 to 10^3 values to 0.01 to 100. Thanks once again