How to display matrices in cell array in a table?

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JingChong Ning
JingChong Ning on 13 Apr 2023
Answered: VBBV on 13 Apr 2023
I have a cell array, and each element of the cell array is a matrix. But when I use cell2table to show the array, the table only shows that it is a 4*1 matrix instead of showing the actual value of the matrix. Is there a way to use cell2table to display the matrix values?
Here is my code, the cell array with matrix is named "x". Currently, I have to use celldisp, but it is not a presentable format.
clear
close all
clc
Q1 = [1 0 0 0; 0 1 0 0; 0 0 0 0; 0 0 0 1];
Q2 = [2 0 0 0; 0 0 0 0; 0 0 1 0; 0 0 0 1];
Q3 = [2 0 0 0; 0 0 0 0; 0 0 1 0; 0 0 0 2];
Q4 = [2 0 0 0; 0 0 0 0; 0 0 2 0; 0 0 0 2];
Q5 = [2 0 0 0; 0 0 0 0; 0 0 2 0; 0 0 0 1];
%{
[u,x] = longdyne(Q1);
cell2table(u,"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
%cell2table(x,"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
celldisp(x)
%}
%
[u,x] = longdyne(Q2);
Q2x = cell2table(u,"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
%cell2table(x,"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
celldisp(x)
%}
%
[u,x] = longdyne(Q3);
Q3x = cell2table(u,"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
%cell2table(x,"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
celldisp(x)
%}
%
[u,x] = longdyne(Q4);
Q4x = cell2table(u,"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
%cell2table(x,"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
celldisp(x)
%}
%
[u,x] = longdyne(Q5);
Q5x = cell2table(u,"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
%cell2table(x,"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
celldisp(x)
%}
function [u,x] = longdyne(QN)
A = [0.994 0.026 0 -32.2; -0.094 0.376 820 0; 0 -0.002 0.332 0; 0 0 1 1];
B = [0;-32.7;-2.08;0];
x = cell(1,11);
x{1,1} = [0;10;0;0];
u = cell(1,10);
R = 0;
P = cell(1,10);
P{1,10} = QN;
F = cell(1,10);
F{1,10} = -1*((R+B.'*P{1,10}*B)^(-1))*B.'*P{1,10}*A;
for i = 9:-1:1
P{1,i}=A.'*P{1,i+1}*A-A.'*P{1,i+1}*B*((R+B.'*P{1,10}*B)^(-1))*B.'*P{1,10}*A+QN;
F{1,i} = -1*((R+B.'*P{1,i+1}*B)^(-1))*B.'*P{1,i+1}*A;
end
%celldisp(F)
for i = 1:10
u{1,i}=F{1,i}*x{1,i};
x{1,i+1}=A*x{1,i}+B*u{1,i};
end
end

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Answers (2)

Walter Roberson
Walter Roberson on 13 Apr 2023
Ran in:
No, there is not. table() objects are not designed for display purposes. In every case in which an entry is multiple lines, table() will only display sizes and datatype.
T = table({1}, {(1:2).'}, {1:2}, {(1:3).'}, {1:3}, {1:20})
T = 1×6 table
Var1 Var2 Var3 Var4 Var5 Var6 _____ ____________ _______ ____________ _________ ______________________________________________________ {[1]} {2×1 double} {[1 2]} {3×1 double} {[1 2 3]} {[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20]}
However, row vectors sometimes have their values displayed.
VBBV
VBBV on 13 Apr 2023
Ran in:
Hi @JingChong Ning
you can use array2table & cell2tmat together to display cell array content present in the table as shown below
clear
close all
clc
Q1 = [1 0 0 0; 0 1 0 0; 0 0 0 0; 0 0 0 1];
Q2 = [2 0 0 0; 0 0 0 0; 0 0 1 0; 0 0 0 1];
Q3 = [2 0 0 0; 0 0 0 0; 0 0 1 0; 0 0 0 2];
Q4 = [2 0 0 0; 0 0 0 0; 0 0 2 0; 0 0 0 2];
Q5 = [2 0 0 0; 0 0 0 0; 0 0 2 0; 0 0 0 1];
[u,x] = longdyne(Q1);
Q1x = array2table(cell2mat(u),"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
Q1x = 1×10 table
u0 u1 u2 u3 u4 u5 u6 u7 u8 u9 __________ __________ ___________ ___________ ___________ __________ _________ _______ _______ ______ -0.0086574 -0.0042254 -1.6577e-05 -1.8409e-05 -2.8398e-05 0.00025997 -0.014429 0.74315 -38.514 1996.1
array2table(cell2mat(x),"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
ans = 4×11 table
x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 __ __________ ___________ __________ __________ ___________ ___________ __________ ________ ________ _______ 0 0.26 0.36356 0.42554 0.48583 0.54421 0.60048 0.65403 0.72361 -0.16517 48.403 10 4.0431 -3.3429e-09 7.303e-07 4.1826e-05 -0.00023159 0.0033941 -0.0054012 0.10023 0 0 0 -0.0019926 4.1016e-05 4.8098e-05 5.4259e-05 7.6997e-05 -0.00051471 0.029835 -1.5358 79.599 -4125.4 0 0 -0.0019926 -0.0019516 -0.0019035 -0.0018492 -0.0017722 -0.0022869 0.027548 -1.5083 78.091
[u,x] = longdyne(Q2);
Q2x = array2table(cell2mat(u),"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
Q2x = 1×10 table
u0 u1 u2 u3 u4 u5 u6 u7 u8 u9 _________ __________ __________ __________ ___________ _________ _________ __________ __________ __________ -0.011239 -0.0036178 -0.0038486 -0.0014606 -7.9764e-05 0.0011088 0.0011992 0.00083069 0.00073796 0.00053194
array2table(cell2mat(x),"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
ans = 4×11 table
x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 __ _________ __________ ___________ __________ ___________ ___________ ___________ ___________ ___________ ___________ 0 0.26 0.36576 0.3696 0.29991 0.20492 0.1208 0.060456 0.021084 0.00069389 -0.0041326 10 4.1275 4.4154 2.0726 0.22173 -1.0395 -1.0383 -0.82385 -0.81235 -0.55322 -0.22547 0 0.0033776 0.00039141 -0.00069586 -0.0013382 -0.00072181 -0.00046695 -0.00057285 -0.00027032 2.1684e-19 0 0 0 0.0033776 0.003769 0.0030731 0.001735 0.0010132 0.00054623 -2.6618e-05 -0.00029694 -0.00029694
[u,x] = longdyne(Q3);
Q3x = array2table(cell2mat(u),"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
Q3x = 1×10 table
u0 u1 u2 u3 u4 u5 u6 u7 u8 u9 _________ __________ __________ __________ ___________ _________ _________ __________ __________ __________ -0.011239 -0.0036176 -0.0038489 -0.0014603 -7.9871e-05 0.0011084 0.0011984 0.00078852 0.00074987 0.00046138
array2table(cell2mat(x),"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
ans = 4×11 table
x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 __ _________ __________ ___________ __________ ___________ ___________ ___________ ___________ ___________ ___________ 0 0.26 0.36576 0.36961 0.29992 0.20495 0.12082 0.060471 0.021096 0.00072802 -0.0050912 10 4.1275 4.4153 2.0721 0.22205 -1.0389 -1.0382 -0.8242 -0.80998 -0.47984 -0.19557 0 0.0033774 0.00039083 -0.00069521 -0.0013375 -0.00072202 -0.00046744 -0.00057148 -0.00018144 -2.1684e-19 1.0842e-19 0 0 0.0033774 0.0037682 0.003073 0.0017355 0.0010135 0.00054606 -2.5421e-05 -0.00020686 -0.00020686
[u,x] = longdyne(Q4);
Q4x = array2table(cell2mat(u),"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
Q4x = 1×10 table
u0 u1 u2 u3 u4 u5 u6 u7 u8 u9 _________ __________ __________ __________ ___________ _________ _________ __________ __________ _________ -0.011239 -0.0036176 -0.0038488 -0.0014604 -7.9891e-05 0.0011083 0.0011974 0.00076669 0.00075485 0.0004244
array2table(cell2mat(x),"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
ans = 4×11 table
x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 __ _________ __________ ___________ __________ ___________ __________ ___________ ___________ ___________ ___________ 0 0.26 0.36576 0.36961 0.29993 0.20495 0.12082 0.060469 0.021093 0.00071971 -0.0056494 10 4.1275 4.4153 2.0721 0.2221 -1.0388 -1.0382 -0.82415 -0.80753 -0.44137 -0.1799 0 0.0033774 0.00039087 -0.00069516 -0.0013375 -0.00072207 -0.0004674 -0.00056939 -0.00013546 0 0 0 0 0.0033774 0.0037683 0.0030731 0.0017356 0.0010135 0.00054612 -2.3267e-05 -0.00015872 -0.00015872
[u,x] = longdyne(Q5);
Q5x = array2table(cell2mat(u),"VariableNames",["u0" "u1" "u2" "u3" "u4" "u5" "u6" "u7" "u8" "u9"])
Q5x = 1×10 table
u0 u1 u2 u3 u4 u5 u6 u7 u8 u9 _________ __________ __________ __________ ___________ _________ _________ __________ __________ __________ -0.011239 -0.0036179 -0.0038486 -0.0014607 -7.9784e-05 0.0011087 0.0011982 0.00078908 0.00074887 0.00046245
array2table(cell2mat(x),"VariableNames",["x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7" "x8" "x9" "x10"])
ans = 4×11 table
x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 __ _________ __________ ___________ __________ ___________ ___________ ___________ ___________ ___________ ___________ 0 0.26 0.36576 0.3696 0.29991 0.20492 0.1208 0.060454 0.021082 0.0007021 -0.0051216 10 4.1275 4.4154 2.0727 0.22178 -1.0395 -1.0383 -0.8238 -0.80923 -0.48094 -0.19602 0 0.0033775 0.00039146 -0.00069581 -0.0013381 -0.00072186 -0.00046691 -0.00057073 -0.00018318 0 1.0842e-19 0 0 0.0033775 0.003769 0.0030732 0.0017351 0.0010132 0.00054629 -2.4434e-05 -0.00020761 -0.00020761
%}
function [u,x] = longdyne(QN)
A = [0.994 0.026 0 -32.2; -0.094 0.376 820 0; 0 -0.002 0.332 0; 0 0 1 1];
B = [0;-32.7;-2.08;0];
x = cell(1,11);
x{1,1} = [0;10;0;0];
u = cell(1,10);
R = 0;
P = cell(1,10);
P{1,10} = QN;
F = cell(1,10);
F{1,10} = -1*((R+B.'*P{1,10}*B)^(-1))*B.'*P{1,10}*A;
for i = 9:-1:1
P{1,i}=A.'*P{1,i+1}*A-A.'*P{1,i+1}*B*((R+B.'*P{1,10}*B)^(-1))*B.'*P{1,10}*A+QN;
F{1,i} = -1*((R+B.'*P{1,i+1}*B)^(-1))*B.'*P{1,i+1}*A;
end
%celldisp(F)
for i = 1:10
u{1,i}=F{1,i}*x{1,i};
x{1,i+1}=A*x{1,i}+B*u{1,i};
end
end
hope this helps

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