Re: [Gnuplot-info] Plotting multiple arrows in gnuplot

[Thomas S. <t.s...@fz...>]

plot your data again with the yrange interval added to
or subtracted from the data:

dy=3
set yrange [0:0+dy]
plot "datafile" using 1:2:(l*cos($3)):(l*sin($3)) with vectors, \
"" using 1:($2+dy):(l*cos($3)):(l*sin($3)) with vectors, \
"" using 1:($2-dy):(l*cos($3)):(l*sin($3)) with vectors

to get the same color for all plots add 'linetype' options.


a.g.s.maxwell wrote:
> 
> Is it possible to have periodic boundaries, so if the vector arrow goes
> out the top, it will come back in at the bottom of the graph at the same
> place at same angle?
> 
> 
> Thomas Sefzick wrote:
>> 
>> l=1.
>> plot 'datafile' using 1:2:(l*cos($3)):(l*sin($3)) with vectors
>> 
>> use 'l' to adjust the length of the vectors.
>> 
>> 
>> a.g.s.maxwell wrote:
>>> 
>>> I have a data file with 3 columns (x,y,theta), and I have plotted a
>>> graph of the x and y positions. Now I need to draw an arrow from each
>>> (x,y) to (x+cos(theta),y+sin(theta)) which is easily done by typing in
>>> each point separately but I will need to do it for up to 1000 points, so
>>> can anyone help me with some code that will automatically assign an
>>> arrow to every point on the graph according to the directions above? 
>>> 
>>> Thanks
>>> 
>> 
>> 
> 
> 

-- 
View this message in context: http://www.nabble.com/Plotting-multiple-arrows-in-gnuplot-tp24354889p24368343.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.