Hello friends,
Guten Morgen,
thanks for hints by Thomas and Hans-Bernhard (da könnten wir ja fast
auf gut Deutsch weitermachen… (-;)
With your support I found nicely working solutions for my tasks:
This one plots the name of a bus stop left (column 1), the number of
boarding passengers (column 2) right besides circles, these are
positioned according to their geographic coordinates (column 3&4).
Confusing is the behaviour of the "offset" command - to find this
setup took very much trial and error.
schnipp++++++++++++++++++++++++++++++++++++++++++++++++++++
set terminal svg fixed enhanced fsize 1
unset border
unset xtics
unset ytics
set output "Augangsdaten.svg"
plot [4430000:4467900] [681000:668691] "Eingangsdaten.csv" using 3:4:
((abs($1))*0.05) with points pointtype 6 pointsize variable notitle,
"Eingangsdaten.csv" using ($3+(abs($1))):4:2 with labels left offset
0.75,0 notitle, "Eingangsdaten.csv" using ($3-(abs($1))):4:1 with
labels right offset -0.75,0 notitle
unset output
schnapp++++++++++++++++++++++++++++++++++++++++++++++++++++
The other one plots lines showing passengers travelling from a number
of stops to other stops.
Columns 1-4 do contain the x,y-coordinates of bus stops, column 5
contains the number of passengers, these are plotted in the middle of
each line, columns 6&7 do contain the names of the bus stops at the
beginning and the end.
Thanks a lot for pointing me to the "with vectors" command - this was
the breakthrough. The very clou would be a possibility to modulate
the thickness of vectors by the number of passengers - bus as I do
have to rework it afterwards anyways, it is not so important.
schnipp ++++++++++++++++++++++++++++++++++++++++++++++++++++
set terminal svg fixed enhanced fsize 1
unset border
unset xtics
unset ytics
set output "Ergebnis.svg"
set xrange [4433000:4467900]
set yrange [689410:658691]
plot "Eingangsdaten.csv" using 1:2:($3-$1):($4-$2) with vectors
nohead lw .5, "Eingangsdaten.csv" using (($1+$3)/2):(($2+$4)/2):5
with labels, "Eingangsdaten.csv" using 1:2:6 with labels,
"Eingangsdaten.csv" using 3:4:7 with labels
unset output
schnapp ++++++++++++++++++++++++++++++++++++++++++++++++++++
Specialized software which does the same costs 10.000s of Euros…
Thanks a lot and greetings,
Wolf
Am 09.11.2009 um 14:48 schrieb Hans-Bernhard Bröker:
> Wolf Drechsel wrote:
>> Given is a list, each line is containing two sets of x-y-
>> coordinates. Each linie should produce one stroke in the plot,
>> leading from coordinate set 1 to coordinate set 2.
>
> If all such lines are strictly single (no sequences of joined
> lines), you might be better off doing a plot "with vectors".
>
> Or you could transform your datafile into a massive list of 'set
> arrow' commands and load that as a gnuplot script, then make a
> dummy plot to display them. Each arrow even gets to have its own
> width.
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