Horizontal constant line plot

I am using plot(1:3600,ones .* 78) 'it gives empty plot' this to plot a horizontal line for y axis is consant 78, x axis is from 1 to 3600 . Or is there another command to plot it .

Answer 1

[Image Analyst]

ones() is a function that takes arguments. You are not giving any. What do you want to plot for your y values?

[Neptune16]

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