Draw a line with matlab

Hi, out of personal interest I want to draw a single white line in a black background of 300x200 pixels using matlab.

How do I accomplish that?

could someone at least tell me wich functions I should use?

Thank you for your time

[Jan]

Do you want to draw a line in a figure on the screen, or create a matrix to be saved in a file? Do you want some anti-aliasing or just black and white pixels?

[oscillator]

I want a matrix in order to use imshow and see the picture in figure(1). Just black and white pixels, nothing complicated

Answer 1

[Image Analyst]

If the row is to be in a certain row, you can do

imageArray(row, column1:column2) = 255;

If the row is to be in a certain column, you can do

imageArray(row1:row2, column) = 255;

If you want a line to go from one point to another (at an angle), you can use linspace():

xLine = round(linspace(x1, x2, 1000));
yLine = round(linspace(y1, y2, 1000));
for k = 1 : length(xLine)
    imageArray(yLine(k), xLine(k)) = 255;
end