how can I plot a line with 45 degree angle in the graph as reference line????
when I use the code "refline" the line I got different angle line and I want 45 degree angle line from the centre of both axes so please suggest me how can I get.
MATLAB: Suggest me how to plot 45 degree line in MATLAB
plotplotting
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Once you do that elementary trigonometry to find all the points, you can use line() to draw the 2 or 3 lines to form the angle or triangle.
line([x1, x2], [y1, y2]);But with just a single point at (2,2), you need to define the location of the other 2 points first.
Then use xlim and ylim to set up the axes limits:
xlim([0, 10]);ylim([0, 10]);Appearances can be deceiving. Why do you think the line is NOT at 45 degrees? (I know, silly question, but there is a point in it.)
In fact, a 45 degree line merely means that the rise and run are the same. That is, if you change x by some number deltax, then y changes by exactly the same amount. Does that not happen in your plot? I know. You still do not see it.
So what is happening here? The units on the x and y axes are not the same. I'll create two plots as an example.
plot(rand(5),rand(5),'ko')hold onplot([0 1],[0 1],'r-')axis equal
Does the line appear to be at 45 degrees? We know it is, and it looks like it is.
Now, just change the axis scaling. The numbers are still identically the same.
axis normalaxis([0 1 0 2])
Does it look like a 45 degree line now?
In this context, look at the axes on the plot you show. Are the axes scaled the same way?
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