Help with graph plotting

I am getting the below strange horizontal line starting from 0 to the other end while plotting a curve.

Any idea why would this be?

I am using plot function

plot(a,b);

[Davide Masiello]

Please share what a and b are.

[Amy Topaz]

a is 1*50 array and b is 50*50 array.

Answer 1

[Matt J]

Your a and b contain data for 2 lines.

[Amy Topaz]

a is 1*50 array and b is 50*50 array.

[Matt J]

If one of the column of b is zero, it would explain why you are getting horizontal line. Troubleshooting would be easier, though, if you would Run your code here in the forum (not on your local computer):

That way, we'd all have access to both code and data and see what it's doing.

[Amy Topaz]

Yes except the first column all other colums are 0. Can I append the final answer matrix to contain 50*1 array instead of 50*50?