How to assign a reference point in graph?

how to assign reference point(0,0) at left top corner like following figure?

Answer 1

[Walter Roberson]

plot(rand(1,30))
set(gca,'YDir', 'reverse')

[LAKSHMANAN ADAIKKAPPAN]

Thank you for your guidance sir

[Muhammad Usman Saleem]

have you check output of this code? @LAKSHMANAN ADAIKKAPPAN

[Walter Roberson]

Certainly I have checked the output of the code. If you prefer to see the full 0 to 14 and 0 to 16, change the graph to use that, such as

plot(0:16, 14 * rand(1,17))

and you might want to set the axis location as well,

set(gca, 'ydir', 'reverse', 'xaxislocation', 'top')

This could be taken further to get rid of the tick marks but leave the tick labels. The ease of doing that would depend upon the MATLAB version being used.

Answer 2

[Muhammad Usman Saleem]

UPDATE 1:

may try this

plot(1:10)
box off
axes('xlim', [1 10], 'ylim', [1 10], 'color', 'none', 'YAxisLocation', 'right', 'XAxisLocation', 'top')

for reading read here

or may try this

t=0:0.1:10;
y=sin(t);
plot(t,y)
set(gca,'XAxisLocation','top','YAxisLocation','left','ydir','reverse');

[LAKSHMANAN ADAIKKAPPAN]

Thank you for your guidance. It will give following figure. But, this is not i need it. Actually i want origin at left top corner?

[Walter Roberson]

No, the key is YDir reverse

[LAKSHMANAN ADAIKKAPPAN]

Thank you for your guidance sir. It will work.

Answer 3

[Steven Lord]

plot(1:10, 1:10);
axis ij

Or if you have the handle of your axes object already, change its YDir property to 'reverse' as Walter showed.

[LAKSHMANAN ADAIKKAPPAN]

Thank you for your guidance sir. It will also work.