gnuplot-info

Re: [Gnuplot-info] x-y-z plot, z-value by dot-size?

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

plot 'datafile' using 1:2:3 with points pointtype 5 pointsize variable

(the 'using 1:2:3" is not really needed in your case)
for more information, see
http://www.gnuplot.info/docs/node145.html


herrdeh wrote:
> 
> Hello everybody out there,
> 
> I managed to install gnuplot on a mac - wow, how proud am I… ((-;
> 
> Now the fun stuff is over and I have to turn towards work… )-:
> 
> Beeing a public transport consultant, I want to plot a map of the numbers
> of boarding passengers at each bus stop within a small bus network. There
> are the geographic coordinates of the bus stops (x and y values) and the
> numbers of boarding passengers (sort of the z values) - but it should not
> make a 3D graph, the z value should be represented by the dot size in the
> (x;y) position instead.
> 
> Can anybody give me a hint?  - I hope I'm clear enough…
> 
> Thanks and greetings,
> 
> Wolf
> 

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Re: [Gnuplot-info] x-y-z plot, z-value by dot-size?

[Wolf D. <dre...@ve...>]

Hello,

I went a big bit ahead! - Wow, thanks a lot.

I used

plot [60:120] [60:120] "Lage-HST-Herzo.csv" using 1:2:4 with points  
pointtype 5 pointsize variable

to make it look quite close to what I want.
Now there are some details remaining:

* How can I avoid the axes to be plotted?
* How can I make the "points" look like circles?
* How can I plot the figure in column 4 (which contains the point  
size = number of boarding passengers) besides each point?

Thanks a lot and greetings,

Wolf

Re: [Gnuplot-info] x-y-z plot, z-value by dot-size?

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

herrdeh wrote:
> 
> Hello,
> 
> I went a big bit ahead! - Wow, thanks a lot.
> 
> I used
> 
> plot [60:120] [60:120] "Lage-HST-Herzo.csv" using 1:2:4 with points  
> pointtype 5 pointsize variable
> 
> to make it look quite close to what I want.
> Now there are some details remaining:
> 
> * How can I avoid the axes to be plotted?
> 

unset border
unset xtics
unset ytics


herrdeh wrote:
> 
> * How can I make the "points" look like circles?
> 

have a look at the 'test' command (instead of 'plot'),
it shows the capabilities of the terminal you are using.

circles: pointtype 6


herrdeh wrote:
> 
> * How can I plot the figure in column 4 (which contains the point  
> size = number of boarding passengers) besides each point?
> 

plot 'with labels', see
http://www.gnuplot.info/docs/node145.html
and
http://gnuplot.sourceforge.net/demo/datastrings.html


herrdeh wrote:
> 
> Thanks a lot and greetings,
> 
> Wolf
> 

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Re: [Gnuplot-info] x-y-z plot, z-value by dot-size?

[Wolf D. <dre...@ve...>]

Hello everybody,

I'm making further progress - I'm quite close to my goal.

One further detail:

I'd like to have the labels outside the edge of the circles - means  
the offset should be diameter-dependent - in a ratio to the value of  
one of the columns.

I tried something like

labels center offset ($1/10),0

column 1 is containing the relevant values. But this doesnt work.

Does anybody have an idea?

Thanks and greetings,

Wolf

Re: [Gnuplot-info] x-y-z plot, z-value by dot-size?

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

just shift the x-position of the labels:
plot "datafile" with points linetype 1 pointtype 6 pointsize variable, \
"" using ($1+$3*0.04):2:3 with labels notitle


herrdeh wrote:
> 
> Hello everybody,
> 
> I'm making further progress - I'm quite close to my goal.
> 
> One further detail:
> 
> I'd like to have the labels outside the edge of the circles - means  
> the offset should be diameter-dependent - in a ratio to the value of  
> one of the columns.
> 
> I tried something like
> 
> labels center offset ($1/10),0
> 
> column 1 is containing the relevant values. But this doesnt work.
> 
> Does anybody have an idea?
> 
> Thanks and greetings,
> 
> Wolf
> 
> 
> 
> ------------------------------------------------------------------------------
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> i700
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> processing features enabled. http://p.sf.net/sfu/kodak-com
> _______________________________________________
> Gnuplot-info mailing list
> Gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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[Gnuplot-info] bars between coordinates, thickness variable

[Wolf D. <dre...@ve...>]

Hello everybody,

I could finish my x-y-z-plot happily - thanks, this will be very  
useful for my work.

Now a second issue comes up:

I'd like to visualize the number of passengers between the different  
bus tops. Data could be given in 3 columns: <number_of_passengers>,  
<x-coordinate>, < y-coordinate>.

The number_of_passengers values should be expressed by the thickness  
of the lines between the bus stops (expressed by coordinates).

How can I do that?

Greetings,

Wolf

Re: [Gnuplot-info] bars between coordinates, thickness variable

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

herrdeh wrote:
> 
> Now a second issue comes up:
> 
> I'd like to visualize the number of passengers between the different  
> bus tops. Data could be given in 3 columns: <number_of_passengers>,  
> <x-coordinate>, < y-coordinate>.
> 
> The number_of_passengers values should be expressed by the thickness  
> of the lines between the bus stops (expressed by coordinates).
> 
> How can I do that?
> 

you could draw each connection between subsequent bus stops separately,
with gnuplot 4.3-cvs you could use the 'for' loop.

let's assume, that each data line contains the number of passengers
leaving the bus stop at the coordinate given by x and y:

number_of_busstops = 10
plot "datafile" using 2:(my_lw=$1, 0/0) every 1::0::0 notitle, \
   for [i=1:number_of_busstops] "" using 2:(my_lw=$1, $3) \
   every 1::(i-1)::i with lines linetype 1 linewidth my_lw notitle

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