How do I draw a set of vertical lines in gnuplot

Question

E g  if I have a graph and want to add vertical lines at every 10 units along the X-axis

User · Answer

To elaborate on previous answers about the  every x units  part  here is what I came up with     Draw 5 vertical lines n   5        evenly spaced between x0 and x1 x0   1 0 x1   2 0 dx    x1-x0   n-1 0         each line going from y0 to y1 y0   0 y1   10  do for  i   0 n-1        x   x0   i dx     set arrow from x y0 to x y1 nohead linecolor  blue    add other styling options if needed

User · Answer

From the Gnuplot documentation  To draw a vertical line from the bottom to the top of the graph at x 3  use    set arrow from 3  graph 0 to 3  graph 1 nohead

User · Answer

alternatively you can also do this   p   lt  echo  x y   w impulse   x and y are the coordinates of the point to which you draw a vertical bar

User · Answer

Here is a snippet from my perl script to do this   print OUTPUT  set arrow from  x1  y1 to  x1  y2 nohead lc rgb   red   n     As you might guess from above  it s actually drawn as a  headless  arrow

User · Answer

You can use the grid feature for the second unused axis x2  which is the most natural way of drawing a set of regular spaced lines   set grid x2tics set x2tics 10 format    scale 0   In general  the grid is drawn at the same position as the tics on the axis  In case the position of the lines does not correspond to the tics position  gnuplot provides an additional set of tics  called x2tics  format    and scale 0 hides the x2tics so you only see the grid lines   You can style the lines as usual with linewith  linecolor

[gnuplot] How do I draw a set of vertical lines in gnuplot?

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