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How to scale values in y-axis to be 1-100%?

조회 수: 30 (최근 30일)
Thanathip Boonmee
Thanathip Boonmee 2020년 5월 7일
댓글: Thanathip Boonmee 2020년 5월 10일
The code below is what I have tried to do. I want to scale the value 200 to become 100% in the plot and the value 100 to become 50%. The x and y values are just made up, I actually need to plot 1440 different values. Help needed! Thanks in advance!
clear
x = [1, 2, 3, 4, 5, 6, 7, 8, 9];
y = [5, 50, 200, 180, 100, 60, 53, 0, 2];
figure
ax = axes;
plot(x,y);
set(ax, 'YTick', [0:10:100], 'YLim', [0, max(y)]);
ytickformat(ax, 'percentage');
ax.YGrid = 'on';
xlabel('Time (Minutes)');
ylabel('Energy Percentage');

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Mehmed Saad
Mehmed Saad 2020년 5월 7일
편집: Mehmed Saad 2020년 5월 7일
clear
x = [1, 2, 3, 4, 5, 6, 7, 8, 9];
y = [5, 50, 200, 180, 100, 60, 53, 0, 2];
figure
ax = axes;
plot(x,y);
set(ax, 'YTick', [0:10:100], 'YLim', [0, max(y)]);
ytickformat(ax, 'percentage');
Save the yticklabels to a variable as it might be difficult for you to create them
ylbs = ax.YTickLabel;
Set yticks to 0:20:200
ax.YTick = 0:20:200;
and label them from 0 to 100
ax.YTickLabel = ylbs;
ax.YGrid = 'on';
xlabel('Time (Minutes)');
ylabel('Energy Percentage');
Or other way of generating tick label by yourself is
generate number from 0 to 100, convert it to string, split it to cell and add a percentage sign using strcat,
clear
x = [1, 2, 3, 4, 5, 6, 7, 8, 9];
y = [5, 50, 200, 180, 100, 60, 53, 0, 2];
figure
ax = axes;
plot(x,y);
set(ax, 'YTick', 0:20:200,...
'YTickLabel',strcat(split(num2str(0:10:100)),'%'),...
'YLim', [0, max(y)]);
ax.YGrid = 'on';
xlabel('Time (Minutes)');
ylabel('Energy Percentage');
  댓글 수: 6
Mehmed Saad
Mehmed Saad 2020년 5월 8일
it is possible but will make the yaxis messy
This is another way to do what you want. see yyaxis for help
Thanathip Boonmee
Thanathip Boonmee 2020년 5월 10일
Thank you so much!

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