## Filling in matrix for strain map

### Yoni de Jong (view profile)

on 12 Jun 2019
Latest activity Answered by Yoni de Jong

on 12 Jun 2019

### KSSV (view profile)

Hi Guys,
How can I fill in the elements in the matrix so that it is equally distributed, based on a few already filled in elements? For example
[0 0 0 0 4 0 0 0 0
0 0 0 0 3 0 0 0 0
0 0 0 0 2 0 0 0 0
0 0 0 0 1 0 0 0 0
7 4 3 2 0 1 2 3 7
0 0 0 0 2 0 0 0 0
0 0 0 0 4 0 0 0 0
0 0 0 0 5 0 0 0 0]
Now i want to become all zeros a value that fits the map to create a fluent strain map out of this matrix.

on 12 Jun 2019

Yoni de Jong

### Yoni de Jong (view profile)

on 12 Jun 2019
Thanks. If I apply
F = fillmissing(A,'linear',2,'EndValues','nearest')
I still get the same matrix, maybe because I only got one horizontal and one vertical as with values?
KSSV

### KSSV (view profile)

on 12 Jun 2019
Yes....explore it has further options..

### Yoni de Jong (view profile)

on 12 Jun 2019

Can you help me?
I created this code.
True_dist = [0 0.5 1 1.5 2.0];
E_a = [0 8 12 15 17];
E_b = [0 11 13 14 17];
E_c = [0 9 13 16 16];
E_d = [0 10 12 15 17];
x_a = True_dist;
v_a = E_a;
xq_a = True_dist(1):0.1:True_dist(end);
Y_a = interp1(x_a,v_a,xq_a,'poly9');
x_b = True_dist;
v_b = E_b;
xq_b = True_dist(1):0.1:True_dist(end);
Y_b = interp1(x_b,v_b,xq_b,'poly9');
x_c = True_dist;
v_c = E_c;
xq_c = True_dist(1):0.1:True_dist(end);
Y_c = interp1(x_c,v_c,xq_c,'poly9');
x_d = True_dist;
v_d = E_d;
xq_d = True_dist(1):0.1:True_dist(end);
Y_d = interp1(x_d,v_d,xq_d,'poly9');
figure();
plot(x_a,v_a,'or');hold on;
plot(xq_a,Y_a,':r'); hold on;
plot(x_b,v_b,'ob');hold on;
plot(xq_b,Y_b,':b'); hold on;
plot(x_c,v_c,'ok');hold on;
plot(xq_c,Y_c,':k'); hold on;
plot(x_d,v_d,'om');hold on;
plot(xq_d,Y_d,':m'); hold on;
legend('Location a','interpolated a', 'location b', 'interpolated b', 'location c', 'interpolated c', 'location d', 'interpolated d')
xlabel('True distance along path')
ylabel('Real strain on silicone sheet [%]')
Matrix = NaN(41,41)
Matrix(:,21) =[fliplr(Y_a)'; Y_c(2:end)']
Matrix(21,:) = [fliplr(Y_d)'; Y_b(2:end)']
With this matrix i want to use
figure()
image
imagesc(Matrix)
colorbar
to create a heat colormap of this. Something like the figure in the attachement.
However, since I only got values for one row and one horizontal axis in the matrix, i need values for in between (voor the NaNs). However, this will not manage. Can you help me?