How to get rid of certain xticklabels?

Question

hmhuang 2021-11-18

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1590419-how-to-get-rid-of-certain-xticklabels

编辑： Matt J 2021-11-19

I have a plot that use log2 for x-axis. Now I want to get rid of xticklabels such as 1.41421, 2.82843, etc., and add 28 to the xticklabels. Namely, I would like to have xticklabels as [1, 2, 4, 8, 16, 28, 32]. Note that the constraint is to use log2 instead of original datapoints for x-axis because I want to somehow show linear speedup. How to do that?

compTime_1by1 = [1088.43, 603.71, 354.15, 236.48, 180.46, 159.06];

compTime_2by1 = [2196.49, 1179.91, 648.38, 413.79, 299.63, 268.45];

compTime_3by1 = [3238.68, 1729.27, 930.70, 590.57, 419.56, 337.15];

speedup_1by1 = compTime_1by1(1) ./ compTime_1by1;

speedup_2by1 = compTime_2by1(1) ./ compTime_2by1;

speedup_3by1 = compTime_3by1(1) ./ compTime_3by1;

numberOfCPUCores = [1, 2, 4, 8, 16, 28];

h1 = plot(log2(numberOfCPUCores), speedup_1by1, '-ob');

set(h1, 'MarkerFaceColor', get(h1,'Color'));

hold on;

h2 = plot(log2(numberOfCPUCores), speedup_2by1, '-or');

set(h2, 'MarkerFaceColor', get(h2,'Color'));

hold on;

h3 = plot(log2(numberOfCPUCores), speedup_3by1, '-ok');

set(h3, 'MarkerFaceColor', get(h3,'Color'));

xt = get(gca, 'XTick');

set(gca, 'XTickLabel', 2.^xt);

set(gca, 'FontSize', 14);

title('Parallel Scalability Test');

legend('Aspect ratio = 1 : 1', 'Aspect ratio = 2 : 1', 'Aspect ratio = 3 : 1', 'Location', 'best');

xlabel('Number of CPU cores');

ylabel('Speed-up');

grid on; grid minor;

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Answer 1

Star Strider 2021-11-18

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1590419-how-to-get-rid-of-certain-xticklabels#answer_835244

在 MATLAB Online 中打开

‘Namely, I would like to have xticklabels as [1, 2, 4, 8, 16, 28, 32].’

It does exactly that when I plot it using the online Run feature here —

compTime_1by1 = [1088.43, 603.71, 354.15, 236.48, 180.46, 159.06];
compTime_2by1 = [2196.49, 1179.91, 648.38, 413.79, 299.63, 268.45];
compTime_3by1 = [3238.68, 1729.27, 930.70, 590.57, 419.56, 337.15];
speedup_1by1 = compTime_1by1(1) ./ compTime_1by1;
speedup_2by1 = compTime_2by1(1) ./ compTime_2by1; 
speedup_3by1 = compTime_3by1(1) ./ compTime_3by1; 
numberOfCPUCores = [1, 2, 4, 8, 16, 28];
h1 = plot(log2(numberOfCPUCores), speedup_1by1, '-ob');
set(h1, 'MarkerFaceColor', get(h1,'Color'));
hold on;
h2 = plot(log2(numberOfCPUCores), speedup_2by1, '-or');
set(h2, 'MarkerFaceColor', get(h2,'Color'));
hold on;
h3 = plot(log2(numberOfCPUCores), speedup_3by1, '-ok');
set(h3, 'MarkerFaceColor', get(h3,'Color'));
xt = get(gca, 'XTick');
set(gca, 'XTickLabel', 2.^xt);
set(gca, 'FontSize', 14);
title('Parallel Scalability Test');
legend('Aspect ratio = 1 : 1', 'Aspect ratio = 2 : 1', 'Aspect ratio = 3 : 1', 'Location', 'best');
xlabel('Number of CPU cores');
ylabel('Speed-up');
grid on; grid minor;