Draw a line and a plane at fixed ponit in 2d and 3d plot

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joy
joy 2012-11-21
Hello I have a 2d plot
where at vertical axis(Y) at a particular point say 0.0039 i want to draw a line parallel to X axis...
and in case of 3d plot I have to draw plane along vertical z axis at same point...
is matlab has any related function to do so....
actually what I want to do is http://s8.postimage.org/nyonm4hs5/fig.jpg in this figure i need to draw a line at 3.9*10-3 horizontally ,how to do this? regards
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Jan
Jan 2012-11-21
In 3D you need three coordinates to determine a plane. Does "plane along the Z axis" mean "perpendiculare to Z axis"? You cannot orient a plane along a line in 3D.

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2012-11-21
编辑：Azzi Abdelmalek 2012-11-22
x=0.0039
plot([-10 10],[x x])
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Azzi Abdelmalek
Azzi Abdelmalek 2012-11-22
编辑：Azzi Abdelmalek 2012-11-22
Ok Simon
x=0.0039
plot([[-10 10],[x x])
I was confused by "vertical axis(Y)"

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Jan
Jan 2012-11-21
How do you want to display the plane? An opaque SURF object will most likely hide all interesting details of the plot. What about a semi-transparent SURF object with an opaque border? Or a disc? Or a bunch of points?
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joy
joy 2012-11-21
I have prob of occurrence on z...a nd my data are along my x and y axis...I want to draw a plane or level at 0.0039 //there might be some point above this prob of occurrence and some shall be below of it..so that I could assume.......

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