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Re-sizing vectors?

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Vittorio Rossi
Vittorio Rossi 2018-5-19
评论： Ameer Hamza 2018-5-20
I am working on a project that works with angles, and I have at my disposal a vector, that shows the angle elaborated and acquired from a sensor.
The only problem is that when I plot the vector, the y-axis has different values from the eulerian angle (see the image attached). I know which sample stands for the maximum angle and which sample stands for the minimum angle, but I can't find a way to " re-sizing" the vector by associating maximum and minimum angle and change all the samples variating within that range.
Does anyone have any suggestions on the code? Perhaps a function?
Thank you in advance for your time MatLAB community!!

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Ameer Hamza
Ameer Hamza 2018-5-19
If you want to change the range of the y-values, you can do it by first normalizing and then denormalizing to your required range
x = [1xn signal]
xNormalized = (x-min(x))/(max(x)-min(x))
newMin = 0;
newMax = 90; % new minimum and maximum value of the signal you want
xNew = xNormalized*(newMax - newMin) + newMin;
xNew will have same shape of x but varies from newMin to newMax.
  2 个评论
Vittorio Rossi
Vittorio Rossi 2018-5-20
Thank you so much! It works!
Ameer Hamza
Ameer Hamza 2018-5-20
You are welcome.

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更多回答（1 个）

Steven Lord
Steven Lord 2018-5-19
When you call the plot function with one input argument, the X coordinates used for the plot are the indices. In this example, V(1) is plotted at x = 1, V(2) at x = 2, etc. I added the line and marker specification to make it easier to see the actual points plotted.
figure
V = 1:2:19;
plot(V, '-o') % X coordinates 1:10
If instead you wanted to plot V(1) at x = 0.5, V(2) at x = 1, V(3) at x = 1.5, etc. you need to specify the vector of x coordinates in your plot call like this:
figure
x = (1:10)./2;
V = 1:2:19;
plot(x, V, '-o') % X coordinates 0.5, 1.0, 1.5, etc.

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