Units help to plot

I want to convert values in a table column to a range of -1 to 1 units.

My -1 value is -800

My 0 value is 300

My 1 value is 800

The column values go from 0 to 800.

How can I do this?

Thanks!

[the cyclist]

x = [-800 300 800];
y = [-1 0 1];

figure
h = plot(x,y,'.:');
set(h,'MarkerSize',32)

Nina, an infinite number of curves can be drawn through the three points you have specified. None of them are linear (so it is not what I would think of as a simple "conversion".)

Do you have any additional information that would be helpful in what you are trying to do? As I have mentioned in another of your questions, please try to be complete in what you are asking for.

Answer 1

[Walter Roberson]

values = randi([0 800], 1, 10)

values = 1×10

709 747 795 14 63 285 232 537 508 183

b = [-800 300 800];
mask = values < b(2);
scaled(mask) = (values(mask)-b(1))./(b(2)-b(1));
scaled(~mask) = (values(~mask)-b(2))./(b(3)-b(2));

scaled

scaled = 1×10

0.8180 0.8940 0.9900 0.7400 0.7845 0.9864 0.9382 0.4740 0.4160 0.8936