Help with code, writematrix not working. Please help fix

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Ian Upchurch
Ian Upchurch on 5 May 2022
Commented: Ian Upchurch on 8 May 2022
Hello, for whatever reason, writematrix is not working for me in MatLab. I need to write my results into an excel file and I don't know what else to do. No matter what I do, I cant fix it.
Error:
Error using writematrix (line 206)
Execution of script mpower as a function is not supported:
E:\Program Files\MATLAB\R2021a\toolbox\matlab\ops\mpower.m
Error in Meh (line 27)
writematrix('Departure City:','table1.xlsx','Sheet',2,'Range','A6')
My Code:
close all
clear
clc
%load the table to read cities and their distances
table=[0 2 3 4
2 0 0 1
3 0 0 5
4 1 5 0]
table = xlsread('table1.xlsx');
L=length(table);
disp(['Cities and their distances: '])
table
disp(['Cities to choose from: 1 to ',num2str(L)])
prompt='Departure City:';
DepartureCity=input(prompt);
while (DepartureCity>L)
disp(['Sorry that this is NOT a city we know. Please enter a valid city number'])
prompt='Departure City:';
DepartureCity=input(prompt);
end
writematrix('Departure City:','table1.xlsx','Sheet',2,'Range','A6')
writematrix(DepartureCity,'table1.xlsx','Sheet',2,'Range','B6')
prompt='Destination City:';
DestinationCity=input(prompt);
while (DestinationCity>L)
disp('Sorry that this is NOT a city we know. Please enter a valid city number')
prompt='Destination City:';
DestinationCity=input(prompt);
end
writematrix('Destination City:','table1.xlsx','Sheet',2,'Range','A7')
writematrix(DestinationCity,'table1.xlsx','Sheet',2,'Range','B7')
DepartCityRow=table(DepartureCity,:);
DestiCityRow=table(DestinationCity,:);
routes=0;
if DepartCityRow(DestinationCity) ~=0
routes=routes+1;
end
for i=1:L
if DepartCityRow(i)~=0 && DestiCityRow(i)~=0
routes=routes+1;
end
end
disp(['Total number of routes:',num2str(routes)])
writematrix('Total number of routes:','table1.xlsx','Sheet',2,'Range','A8')
writematrix(routes,'table1.xlsx','Sheet',2,'Range','B8')
direct=DepartCityRow(DestinationCity);
disp('STOP DISTANCE')
disp(['Direct ',num2str(direct),' Miles'])
writematrix('STOP DISTANCE','table1.xlsx','Sheet',2,'Range','A9')
writematrix('Direct ','table1.xlsx','Sheet',2,'Range','A10')
writematrix(direct,'table1.xlsx','Sheet',2,'Range','B10')
writematrix(' Miles','table1.xlsx','Sheet',2,'Range','C10')
j=0;
if routes>1
for i=1:L
if i~=DestinationCity && i~=DepartureCity && DepartCityRow(i)~=0 && DestiCityRow(i)~=0
j=j+1;
route(j,1)=DepartCityRow(i) + DestiCityRow(i);
disp(['City',num2str(i),' ',num2str(DepartCityRow(i)),'+',num2str(DestiCityRow(i)),'=',num2str(route(j,1)),' Miles'])
if j==1
writematrix('City','table1.xlsx','Sheet',2,'Range','A11')
writematrix(DepartCityRow(i),'table1.xlsx','Sheet',2,'Range','B11')
writematrix('+','table1.xlsx','Sheet',2,'Range','C11')
writematrix(DestiCityRow(i),'table1.xlsx','Sheet',2,'Range','D11')
writematrix('=','table1.xlsx','Sheet',2,'Range','E11')
writematrix(route(j,1),'table1.xlsx','Sheet',2,'Range','F11')
writematrix(' Miles','table1.xlsx','Sheet',2,'Range','G11')
else
writematrix('City','table1.xlsx','Sheet',2,'Range','A12')
writematrix(DepartCityRow(i),'table1.xlsx','Sheet',2,'Range','B12')
writematrix('+','table1.xlsx','Sheet',2,'Range','C12')
writematrix(DestiCityRow(i),'table1.xlsx','Sheet',2,'Range','D12')
writematrix('=','table1.xlsx','Sheet',2,'Range','E12')
writematrix(route(j,1),'table1.xlsx','Sheet',2,'Range','F12')
writematrix(' Miles','table1.xlsx','Sheet',2,'Range','G12')
end
end
end
if j==1
c={' ', ' ', ' ', ' ', ' ', ' ',' '};
writecell(c,'table1.xlsx','Sheet',2,'Range','A12:G12')
end
disp('Routes and distances written to the sheet 2 of table1.xlsx. Goodbye!')
end

Answers (4)

Cris LaPierre
Cris LaPierre on 5 May 2022
Your first input to writematrix needs to be a variable name, not a char. Change this:
writematrix('Departure City:','table1.xlsx','Sheet',2,'Range','A6')
to this
writematrix(DepartureCity,'table1.xlsx','Sheet',2,'Range','A6')
  7 Comments
Ian Upchurch
Ian Upchurch on 8 May 2022
Hey, thank you. My teacher just emailed us this morning our Virtual DeskTop is having issue even running simple code

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Ian Upchurch
Ian Upchurch on 5 May 2022
I can. I just attempted to make a new file that worked the first time, only to close off and produce the same error as last time.

Sean de Wolski
Sean de Wolski on 5 May 2022
which -all writematrix
which -all mpower
  4 Comments
Ian Upchurch
Ian Upchurch on 5 May 2022
What does this exactly mean? Is it a program that contains a list of all the functions I can use?

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Jeremy Hughes
Jeremy Hughes on 6 May 2022
The error reffers to mpower.m being a script and not a function. mpower is a builtin function, and mpower.m contains only help text. It seems that MATLAB isn't detecting the builtin function, which is likely an installation issue. you can try reinstalling from scratch, that should resolve the issue.

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