MATLAB: LOG vs LOG10 plot

loglog10loglog

I want to have a plot in a 'log10(x)log10(y)' scale. Up to now, I was using the 'loglog' plot. Is the 'loglog' plot actually a lnx-lny plot? Is there a command for a log10(x)log10(y) plot?

Best Answer

loglog is to the base of 10 (just see the axis scale).

Related Solutions

MATLAB: How to plot a diagonal line on a log-log scale plot

The most straight forward way to do this is to "loglog" plot a "logspace" array across the bounds that you are working with. For example:

x = logspace(0,15);
scatter(x,x)
grid on
hold on
loglog(x,x)
hold off

Alternatively, you can call "plot" with a "linspace" array as both the "x" and "y" arguments.

x = logspace(0,15);
scatter(x,x)
grid on
hold on
y = linspace(1,1e15);
plot(y,y)
hold off

MATLAB: Display negative values on logarithmic graph

Plot the logarithm of the absolute value of y multiplied by sign of y, and the change labels:

x = linspace(0,3,10000);
y = 1e6*exp(-x).*(sin(10*x)-0.5);
plot(x,y)
figure
Y = sign(y).*log10(abs(y));
plot(x,Y,'.')
yl = get(gca,'ytick');
set(gca,'yticklabel',sign(yl).*10.^abs(yl))

Best Answer

Related Solutions

MATLAB: How to plot a diagonal line on a log-log scale plot

MATLAB: Display negative values on logarithmic graph

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