How to make a text file from functions

x = 1
y = 1 
myFile = fopen('myValues.txt', 'w')
fprintf(myFile, "X Length\tY Length\t Hypot Length\t\tPerimeter\t\tArea\n")
for i = 1:5
    for j = 1:5
        myHypot = hValue(i,j)
        myPerim = pValue(i,j)
        myArea = aValue(i,j)
        fprintf(myFile, string(i) + "\t\t\t" + string(j) + "\t\t\t\t" + string(myHypot) + "\t\t\t" + string(myPerim) + "\t\t\t" + string(myArea) + "\n")
    end
end
function hValue = hValue(xValue,yValue)
hValue = sqrt(xValue.^2+yValue.^2);
end
function pValue = pValue(xValue,yValue)
pValue = (xValue + yValue + (sqrt(xValue.^2+yValue.^2)));
end
function aValue = aValue(xValue,yValue)
aValue = 0.5*xValue*yValue;
end

[Walter Roberson]

Just remember to fclose(myFile) at the end.

Answer 1

[Sanju]

Hi Chloe,

To generate a text file using MATLAB functions, utilize the "fprintf" function to input the desired content into the file. It appears that the code you've written is functioning correctly; however, remember to close the file once the operation is complete.

Here's the updated code,

x = 1;
y = 1;

myFile = fopen('myValues.txt', 'w');
fprintf(myFile, "X Length\tY Length\t Hypot Length\t\tPerimeter\t\tArea\n");

for i = 1:5
    for j = 1:5
        myHypot = hValue(i,j);
        myPerim = pValue(i,j);
        myArea = aValue(i,j);
        fprintf(myFile, string(i) + "\t\t\t" + string(j) + "\t\t\t\t" + string(myHypot) + "\t\t\t" + string(myPerim) + "\t\t\t" + string(myArea) + "\n");
    end
end

fclose(myFile);

function hValue = hValue(xValue,yValue)
    hValue = sqrt(xValue.^2+yValue.^2);
end

function pValue = pValue(xValue,yValue)
    pValue = (xValue + yValue + (sqrt(xValue.^2+yValue.^2)));
end

function aValue = aValue(xValue,yValue)
    aValue = 0.5*xValue*yValue;
end

This code will create a file named "myValues.txt" and write the desired content to it. Each line in the file will contain the values of i, j, myHypot, myPerim, and myArea separated by tabs.

Hope this helps!