# For 2 curves, how to have xticks on both the above and below of x-axis?

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Xiaohan Du il 14 Mag 2018
Commentato: Xiaohan Du il 15 Mag 2018
Hi all, I plot the attached figure using this code
clear; clc;
x1 = [1 3 5 7];
x2 = [1 2 4 7];
data1 = [1 2 3 4];
data2 = [4 3 2 1];
hAx1 = semilogy(x1, data1, 'b-^');
hold on
hAx2 = semilogy(x2, data2, 'k-v');
I'd like to have x1 on top and x2 on below of the x-axis using xticks, so the figure would show (1 3 5 7) on the below of x-axis with blue numbers and show (1 2 4 7) on the top of the x-axis with black numbers. Such that the 2 curves are differentiated.
Many thanks!
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### Risposte (2)

Akira Agata il 15 Mag 2018
The following is one way to do that. Please see the following link for more details.
hAx1 = semilogy(x1, data1, 'b-^');
hold on
hAx2 = semilogy(x2, data2, 'k-v');
ax1 = gca;
ax1.XColor = 'b';
ax1.XTick = [1 3 5 7];
ax2 = axes(...
'Position', ax1.Position,...
'XAxisLocation', 'top',...
'Color', 'none',...
'YTick', [],...
'XLim', [1 7],...
'XTick', [1 2 4 7]);
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Xiaohan Du il 15 Mag 2018
How to get rid of the extra scale on the top x axis and right y axis?

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the cyclist il 14 Mag 2018
The easiest way to get something close to what you want is to use the yyaxis command. Take a look at the examples there.
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