changing y limit of a plot

2015 4 4
2 个回答
回答已采纳
更新时间：2015 4 5
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0 个投票

i have x column matrix...the plotting is shown...how to change y axis limit between 0 to 1 not changing x values? please help....

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 采纳的回答

Image Analyst
Image Analyst 2015-4-5

0 个投票

Use the ylim() function to set the limits of the y axis:
y = y / max(y); % Normalize y
bar(x, y);
ylim([0, 1]);

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LUI PAUL
LUI PAUL 2015-4-5
thank you but how can i get y for a column matrix.its giving y=1;
dpb
dpb 2015-4-5
See
doc max
for an array it by default returns the maximum value of columns in a row vector; then
doc bsxfun
to divide each column by its appropriate value.
Image Analyst
Image Analyst 2015-4-5
LUI, I don't understand your question. You must already have x and y values. If not, what did you plot in your bar chart?
LUI PAUL
LUI PAUL 2015-4-5
i have the data like the file i have given. plotting is
hist(P(6:114,5));figure(gcf);
and getting the figure. but y values is 0 to 50...want to replace by 0 to 1.since its a column matrix...y is 1.
Image Analyst
Image Analyst 2015-4-5
[y, x] = hist(P(6:114,5));
y = y / max(y); % Normalize y
bar(x, y);
ylim([0, 1]);
LUI PAUL
LUI PAUL 2015-4-5
thank you Image Analyst.....thank you so much....its working.
Image Analyst
Image Analyst 2015-4-5
You're welcome. Go ahead and officially "Accept this answer" then. Thanks in advance.

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dpb
dpb 2015-4-4

0 个投票

I presume you mean to normalize the values as simply changing the y-axis limits on the plot would just leave a solid blob across the whole graph...how, precisely, to compute that is dependent upon how you have the data that made the plot which you haven't revealed...

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LUI PAUL
LUI PAUL 2015-4-5
编辑：LUI PAUL 2015-4-5
y lim is 0 to 450..and i want to make the limit 0 to 1 with out effecting the x values.that means 450/450=1;0/450=0;actually i want to normalize the data amounts,not the values.

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