changing y limit of a plot

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....

Answer 1

[Image Analyst]

Use the ylim() function to set the limits of the y axis:

y = y / max(y); % Normalize y
bar(x, y);
ylim([0, 1]);

[LUI PAUL]

thank you but how can i get y for a column matrix.its giving y=1;

[dpb]

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]

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]

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]

[y, x] = hist(P(6:114,5));
y = y / max(y); % Normalize y
bar(x, y);
ylim([0, 1]);

[LUI PAUL]

thank you Image Analyst.....thank you so much....its working.

[Image Analyst]

You're welcome. Go ahead and officially "Accept this answer" then. Thanks in advance.

Answer 2

[dpb]

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...

[LUI PAUL]

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.