How to set Frameticks properly?

Question

I want to do a MatrixPlot and set the ticks to be from $-1$ to $1$ for both axes. Here in this (post Specify and rename ticks in FrameTicks) it is said FrameTicks work in this way

FrameTicks -> {{leftYTicks, rightYTicks}, {bottomXTicks, topXTicks}}

But when I try to do it using the following command

MatrixPlot[{{1, 0.316287, 0.0926149}, {0.0382826, 0.60648, 
   0.115326}, {0.136868, 0.511539, 0.135918}}, 
 FrameTicks -> {{{-1, 0, 1}, None}, {{-1, 0, 1}, None}}]

I get the plot below. Why it doesn't work properly?

Answer 1

The coordinates 0 and –1 are not visible in the plot because they lie outside the plot. What you want is to set the labels –1, 0, 1 at the coordinates 1, 2, 3.

ticks = Transpose[{Range[3], Range[-1, 1]}]

(* {{1, -1}, {2, 0}, {3, 1}} *)

MatrixPlot[{{1, 0.316287, 0.0926149}, {0.0382826, 0.60648, 
   0.115326}, {0.136868, 0.511539, 0.135918}}, 
 FrameTicks -> {{ticks, None}, {ticks, None}}]