Is there any log-scale for symbolic functions?

close all; clear all; clc
syms x y

Dt = 0.15*10^-6;
e = exp(-y^2);

Eint = int(e,[0 x/(2*Dt)]);

C = 10^20*(1-(2/sqrt(pi)*Eint));

figure(1)
fplot(C,[0 2*10^-6])

figure(2)
fplot(C,[0 2*10^-6])
set(gca, 'YScale', 'log');

Warning: Error updating FunctionLine.

DataSpace or ColorSpace transform method failed.

//

It's my code. I never get this Y logscale plot.

Eventhough I use 'set(gca, 'YScale', 'log');' , It doesn't work.

How can I get this logsacle graph? Help........

Answer 1

[Matt J]

This also seems to work, as long as you don't care whether your plot line is of type Line or FunctionLine

figure(2);
h=fplot(C,[0 2*10^-6]);
semilogy(h.XData,h.YData)

Answer 2

[Star Strider]

I get Warnings and no line when I try that. I have no idea what the problem could be.

Meanwhile, see if this work-around does what you want:

figure(2)
fplot(log10(C),[0 2E-6])
Ax2 = gca;
yt = Ax2.YTick;
Ax2.YTickLabel = sprintfc('10^{%2d}',yt);

.