gnuplot development

check if the gnuplot package of your distribution contains
the file "random-points".

if you didn't find it, try
find / -name 'random-points'
(takes some time)

if there is nothing found download the gnuplot sources.
once unpacked, you will find the file in the 'demo' directory.


CLOSE Dave (DAE) wrote:
> 
> I'm trying to create graphs similar to those shown in the demo gallery 
> cumulative smoothing. However, the example scripts given reference a 
> file called random-points which is not supplied anywhere I can find. 
> Without it, I can't be sure I'm using the examples correctly.
> 
> To work around the lack of that file, I've created a file with some 
> random numbers in four columns. When I feed this file to the second, 
> third, and fourth example scripts, I get something reasonably similar to 
> the example graphs. But it doesn't seem to work for the first example. 
> There, instead of the histogram, I get a number of horizontal straight 
> lines the full width of the graph. I wonder what I'm doing wrong?
> 
> This is the gnuplot 4.4.0-5 RPM supplied with Fedora 14 (beta).
> -- 
> Dave Close, Thales Avionics, Irvine California USA
> 
> 
> ------------------------------------------------------------------------------
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> contest
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> Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store 
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On 26.10.2010 01:48, CLOSE Dave (DAE) wrote:
> I'm trying to create graphs similar to those shown in the demo gallery
> cumulative smoothing. However, the example scripts given reference a
> file called random-points which is not supplied anywhere I can find.

That's a packaging error by your Linux distributor.  The file is present 
in the packages produced by us.

> This is the gnuplot 4.4.0-5 RPM supplied with Fedora 14 (beta).

So ask Fedora.

with fixed axis ranges and defined xtics increment, yes:

c2f(x)=x*9./5.+32.
set xrange [0:100]
set x2range [c2f(0):c2f(100)]
set xtics out nomirror
set xtics 10
set x2tics c2f(0),c2f(10)-c2f(0),c2f(100)
set format x "\n%g"
set format x2 "%g"
set x2tics axis
plot x


lynx.abraxas wrote:
> 
> On 15/09/10 00:34:40, Thomas Sefzick wrote:
>> 
>> you plot the function against degree celsius. and you add a second
>> axis with degree fahrenheit.
>> for this purpose it is necessary to set the range for the first axis
>> and then set the according range for the second axis.
>> 
>> c2f(x)=x*9./5.+32.
>> set xrange [0:100]
>> set x2range [c2f(0):c2f(100)]
>> set xtics out nomirror
>> set format x "\n%g"
>> set x2tics axis
>> plot x
>> 
> 
> Thanks Johannes and Thomas for Your answers.
> I'm  wondering  though,  if  it is possible in Thomas' idea to have the
> x2tics
> only appear where there is an xtic. Can the xaxis' and  the  x2axis'  tics 
> be
> correlated in such a way?
> 
> Thanks for Your answers and any further help or hints on this.
> Lynx
> 
> 
> 
> ------------------------------------------------------------------------------
> Download new Adobe(R) Flash(R) Builder(TM) 4
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your plot command doesn't really work because you loose the first line,
due to the columnheader(2) option which interprets the first line as
a text line, not as a data line.

a 'plot nothing' to set a variable containing the values you want to have
in the key should do the job:

plot "OUT.txt" using \
0:(my_title="m = ".stringcolumn(2)." C = ".stringcolumn(3)." b =
".stringcolumn(4) , 0/0) \
every ::0::0 notitle, \
"" index 0 using 1:5:7 title my_title with yerrorbars


AceStrider1 wrote:
> 
> Hi All,
> 
> I am trying to set a title on the legend based on data from multiple
> columns.
> 
> for instance the file name is out.txt:
> 
> #N	        m 	C   	b	A       	B       	STDEV_A     	STDEV_B     
> 100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04	1.335500E-03
> 1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04	4.222800E-04
> 10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05	1.334100E-04
> 100000000  1 	0.1 	0	0.020740	0.231890	1.425300E-05	4.220400E-05
> 
> I am plotting using the following:
> 
> set log x
> set xrange [ 10000 : 1000000000]
> set title "Albedo"
> plot "OUT.txt" index 0 using 1:5:7  title  column(2) with yerrorbars 3
> 
> 
> 
> This works, but I am having a difficult time combining say column 2, 3,
> and 4 as in
> "m = ".column(2)." C = ".column(3)." b = ".column(4)
> 
> Does anyone have any idea?
> 
> Thank,
> Adan
> 
> 
> 

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Thomas,

Thank you very much for the prompt reply and suggestion.  Your method seems
to work at concatenating.  It is correctly reading the values from the
columns.  The only strange thing now is that gnuplot in now using the first
line of my last group (index 79) instead of (index 0).

For Instance my datafile out.txt looks like:

#NPARTICLES	m 	C   	b	A       	B       	STDEV_A     
100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04
1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04
10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05
100000000  	1 	0.1 	0	0.020740	0.231890	1.425300E-05
                                                        
                                                        
100000     	5 	0.1 	0	0.021760	0.001920	4.613800E-04
1000000    	5 	0.1 	0	0.021780	0.002020	1.459800E-04
10000000   	5 	0.1 	0	0.021670	0.002070	4.604500E-05
100000000  	5 	0.1 	0	0.021690	0.002050	1.456700E-05
                                                        
                                                        
100000     	10	0.1 	0	0.021710	0.000020	4.608600E-04
1000000    	10	0.1 	0	0.021570	0.000010	1.452900E-04
10000000   	10	0.1 	0	0.021710	0.000010	4.608800E-05
100000000  10	0.1 	0	0.021680	0.000010	1.456300E-05


100000     	20	0.99	4	0.767610	0.013350	1.335600E-03
1000000    	20	0.99	4	0.770680	0.013310	4.204000E-04
10000000   	20	0.99	4	0.769150	0.013460	1.332500E-04
100000000  20	0.99	4	0.769360	0.013440	4.212400E-05

So I am plotting the correct data, except the labels are off.  I confirmed
it was the first line of my
last index group by changing 0.99 to 0.79 and plotting.

This is what my gnuplot file looks like now:

reset

set terminal svg
set output "CASE0.svg"
set xlabel 'Particles'
set ylabel 'Fraction'
set grid
set log x
set xrange [ 10000 : 1000000000]
set title "Albedo"

plot "OUT.txt" using 0:(my_title="Analog m = ".stringcolumn(2)." C =
".stringcolumn(3)." b = ".stringcolumn(4) , 0/0) \
every ::0::0 notitle, "" index 0 using 1:5:7 title my_title with yerrorbars
3

set terminal wxt
replot



I believe every ::0::0     means to use the first line only.
I am not so sure about 0/0 <-- it did not seem to make a difference if I had
it in there or not.

Thanks Again,

Adan


AceStrider1 wrote:
> 
> Hi All,
> 
> I am trying to set a title on the legend based on data from multiple
> columns.
> 
> for instance the file name is out.txt:
> 
> #N	        m 	C   	b	A       	B       	STDEV_A     	STDEV_B     
> 100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04	1.335500E-03
> 1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04	4.222800E-04
> 10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05	1.334100E-04
> 100000000  1 	0.1 	0	0.020740	0.231890	1.425300E-05	4.220400E-05
> 
> I am plotting using the following:
> 
> set log x
> set xrange [ 10000 : 1000000000]
> set title "Albedo"
> plot "OUT.txt" index 0 using 1:5:7  title  column(2) with yerrorbars 3
> 
> 
> 
> This works, but I am having a difficult time combining say column 2, 3,
> and 4 as in
> "m = ".column(2)." C = ".column(3)." b = ".column(4)
> 
> Does anyone have any idea?
> 
> Thank,
> Adan
> 
> 
> 

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oh, i forgot the 'index 0' in the dummy plot:

plot "OUT.txt" using \
0:(my_title="m = ".stringcolumn(2)." C = ".stringcolumn(3)." b =
".stringcolumn(4) , 0/0) \
every ::0::0 index 0 notitle, \
"" index 0 using 1:5:7 title my_title with yerrorbars

yes, 'every ::0::0' means the 1st line of a data set.

'0/0' means 'undefined', and undefined points are not plotted.


AceStrider1 wrote:
> 
> Thomas,
> 
> Thank you very much for the prompt reply and suggestion.  Your method
> seems to work at concatenating.  It is correctly reading the values from
> the columns.  The only strange thing now is that gnuplot in now using the
> first line of my last group (index 79) instead of (index 0).
> 
> For Instance my datafile out.txt looks like:
> 
> #NPARTICLES	m 	C   	b	A       	B       	STDEV_A     
> 100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04
> 1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04
> 10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05
> 100000000  	1 	0.1 	0	0.020740	0.231890	1.425300E-05
>                                                         
>                                                         
> 100000     	5 	0.1 	0	0.021760	0.001920	4.613800E-04
> 1000000    	5 	0.1 	0	0.021780	0.002020	1.459800E-04
> 10000000   	5 	0.1 	0	0.021670	0.002070	4.604500E-05
> 100000000  	5 	0.1 	0	0.021690	0.002050	1.456700E-05
>                                                         
>                                                         
> 100000     	10	0.1 	0	0.021710	0.000020	4.608600E-04
> 1000000    	10	0.1 	0	0.021570	0.000010	1.452900E-04
> 10000000   	10	0.1 	0	0.021710	0.000010	4.608800E-05
> 100000000  10	0.1 	0	0.021680	0.000010	1.456300E-05
> 
> 
> 100000     	20	0.99	4	0.767610	0.013350	1.335600E-03
> 1000000    	20	0.99	4	0.770680	0.013310	4.204000E-04
> 10000000   	20	0.99	4	0.769150	0.013460	1.332500E-04
> 100000000  20	0.99	4	0.769360	0.013440	4.212400E-05
> 
> So I am plotting the correct data, except the labels are off.  I confirmed
> it was the first line of my
> last index group by changing 0.99 to 0.79 and plotting.
> 
> This is what my gnuplot file looks like now:
> 
> reset
> 
> set terminal svg
> set output "CASE0.svg"
> set xlabel 'Particles'
> set ylabel 'Fraction'
> set grid
> set log x
> set xrange [ 10000 : 1000000000]
> set title "Albedo"
> 
> plot "OUT.txt" using 0:(my_title="Analog m = ".stringcolumn(2)." C =
> ".stringcolumn(3)." b = ".stringcolumn(4) , 0/0) \
> every ::0::0 notitle, "" index 0 using 1:5:7 title my_title with
> yerrorbars 3
> 
> set terminal wxt
> replot
> 
> 
> 
> I believe every ::0::0     means to use the first line only.
> I am not so sure about 0/0 <-- it did not seem to make a difference if I
> had it in there or not.
> 
> Thanks Again,
> 
> Adan
> 
> 
> AceStrider1 wrote:
>> 
>> Hi All,
>> 
>> I am trying to set a title on the legend based on data from multiple
>> columns.
>> 
>> for instance the file name is out.txt:
>> 
>> #N	        m 	C   	b	A       	B       	STDEV_A     	STDEV_B     
>> 100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04	1.335500E-03
>> 1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04	4.222800E-04
>> 10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05	1.334100E-04
>> 100000000  1 	0.1 	0	0.020740	0.231890	1.425300E-05	4.220400E-05
>> 
>> I am plotting using the following:
>> 
>> set log x
>> set xrange [ 10000 : 1000000000]
>> set title "Albedo"
>> plot "OUT.txt" index 0 using 1:5:7  title  column(2) with yerrorbars 3
>> 
>> 
>> 
>> This works, but I am having a difficult time combining say column 2, 3,
>> and 4 as in
>> "m = ".column(2)." C = ".column(3)." b = ".column(4)
>> 
>> Does anyone have any idea?
>> 
>> Thank,
>> Adan
>> 
>> 
>> 
> 
> 

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Thomas,

Thanks for the help.   It now works great.


Adan 

AceStrider1 wrote:
> 
> Hi All,
> 
> I am trying to set a title on the legend based on data from multiple
> columns.
> 
> for instance the file name is out.txt:
> 
> #N	        m 	C   	b	A       	B       	STDEV_A     	STDEV_B     
> 100000     	1 	0.1 	0	0.020280	0.232320	4.457500E-04	1.335500E-03
> 1000000    	1 	0.1 	0	0.020740	0.232260	1.425000E-04	4.222800E-04
> 10000000   	1 	0.1 	0	0.020800	0.231650	4.512800E-05	1.334100E-04
> 100000000  1 	0.1 	0	0.020740	0.231890	1.425300E-05	4.220400E-05
> 
> I am plotting using the following:
> 
> set log x
> set xrange [ 10000 : 1000000000]
> set title "Albedo"
> plot "OUT.txt" index 0 using 1:5:7  title  column(2) with yerrorbars 3
> 
> 
> 
> This works, but I am having a difficult time combining say column 2, 3,
> and 4 as in
> "m = ".column(2)." C = ".column(3)." b = ".column(4)
> 
> Does anyone have any idea?
> 
> Thank,
> Adan
> 
> 
> 

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On 20/10/10 13:32:41, Marek W. Gutowski wrote:
> The simplest thing is to plot whatever is of interest and then
> to use mouse for zooming the area in question. Read current
> mouse pointer coordinates in the lower left part of plot.
> Zoom again, if still not satisfied.

Thanks  Marek  for  Your  answer. I seem to have asked it a bit unpresize. I'd
need  an         automatic/computational  evaluation  where  two  data   plots
intersect or where the difference of the two has its roots. Reading it off the
plot is OK for a few plots but if You need   to evalutate a big load  of  data
it would be nice to have a program doing that for You.

Can that be done with gnuplot or any other linux tool?

Thanks for any help or hints.
Lynx

> lynx.abraxas@... wrote:
>> Is  there  a  possibility  to  determin  the  root  of  a  data  plot  or  the
>> intersections of two plots depending on the interpolation type that was chosen
>> for plotting? Is that possible with gnuplot or another free linux tool?
>> I know it is tricky to define the intersection points for data plots since the
>> intersection mostly depends on the interpolation type and is rarly exactly  on
>> a  data  point.  Still it is often necessary to estimate the intersection of a
>> data plot with another or with a function.
>> It would be already helpful to know the two data points in between  which  the
>> intersection  would  lie.  I  guess  for  the  problem  of  finding  the  root
>> (intersection of a plot with the x-axis) it would just be a problem of finding
>> the pairs of adjacent points where thy y-value chages sign.
>> Any  way to  do that with gnuplot or another tool? Still, having an evaluation
>> possibility depending on the gnuplot interpolation type (eg.  straigth  lines,
>> splines or kdensity) would be great.
>>
>> Thanks for any help or hints about this.
>> Lynx
>
> -- 
> Marek W. Gutowski
> Institute of Physics PAS, ON-3.2, Al. Lotnikow 32/46
> 02-668 Warszawa, Poland, tel. +48-22-0228436601 ext. 3122
> == To talk or not to talk?  Yes, talk, plain ASCII please ==
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

yes, there is a limit.
it's written in the manual under 'user-defined variables and functions':
version 4.2 and below: 5 parameters
version 4.4 and above: 12 parameters


Stefan-137 wrote:
> 
> Dear Plotters,
> 
> Gnuplot returns "function contains too many parameters", if I use a
> function
> with 13 parameters. Using "only" 12 parameters Gnuplot returns no error
> alert.
> is there any limit of parameters, which can be used in one function?
> 
> Thanks 
> 
> Stefan 
> 
> 
> ------------------------------------------------------------------------------
> Download new Adobe(R) Flash(R) Builder(TM) 4
> The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly 
> Flex(R) Builder(TM)) enable the development of rich applications that run
> across multiple browsers and platforms. Download your free trials today!
> http://p.sf.net/sfu/adobe-dev2dev
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> gnuplot-info mailing list
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> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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That is a nice little hack.

Thanks,

BBands

On Wed, Oct 13, 2010 at 3:45 AM, Hagen Wierstorf <hagen@...> wrote:
>
>
> On Sat, 2 Oct 2010 12:35:00 -0500, Jon <devout1977@...> wrote:
>> It seems locating an accurate position on a graph to put some label or arrow
>> on needs try and wrong many times if using graph or screen coordinate, which
>> is time-consuming.
>
> To find the right label position can be indeed very time-consuming if
> you have a lot of labels to put in a graph. I have solved the problem
> for my purposes by using an interactive way to get the right positions.
> Have a look at http://www.gnuplotting.org/interactive-label-placing/ for
> the basic functionality.
> But I'm not sure if this is the right thing for you, because the
> position is not given in screen coordinates.
>
> /Hagen
>
>
>
> ------------------------------------------------------------------------------
> Beautiful is writing same markup. Internet Explorer 9 supports
> standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
> Spend less time writing and  rewriting code and more time creating great
> experiences on the web. Be a part of the beta today.
> http://p.sf.net/sfu/beautyoftheweb
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>



-- 
John Bollinger, CFA, CMT
 http://www.BollingerBands.com

If you advance far enough, you arrive at the beginning.

Thanks, this is pretty nice! I don't know that gnuplot can do such
complicated things.

BTW, is it possible to modify the script to output the selected points into
an output file given a specific format?

Jon


On Wed, Oct 13, 2010 at 5:45 AM, Hagen Wierstorf <hagen@...:

>
>
> On Sat, 2 Oct 2010 12:35:00 -0500, Jon <devout1977@...> wrote:
> > It seems locating an accurate position on a graph to put some label or
> arrow
> > on needs try and wrong many times if using graph or screen coordinate,
> which
> > is time-consuming.
>
> To find the right label position can be indeed very time-consuming if
> you have a lot of labels to put in a graph. I have solved the problem
> for my purposes by using an interactive way to get the right positions.
> Have a look at http://www.gnuplotting.org/interactive-label-placing/ for
> the basic functionality.
> But I'm not sure if this is the right thing for you, because the
> position is not given in screen coordinates.
>
> /Hagen
>
>
>
>
> ------------------------------------------------------------------------------
> Beautiful is writing same markup. Internet Explorer 9 supports
> standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
> Spend less time writing and  rewriting code and more time creating great
> experiences on the web. Be a part of the beta today.
> http://p.sf.net/sfu/beautyoftheweb
> _______________________________________________
> gnuplot-info mailing list
> gnuplot-info@...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>

On Thu, 14 Oct 2010 03:25:05 -0500, Jon <devout1977@...> wrote:
> 
> BTW, is it possible to modify the script to output the selected
> points into an output file given a specific format?
> 

Just add this two lines after the "label_number = label_number+1;\"
line in the label_loop.gnu file:

cmd = sprintf("echo \"set label '$0' at %.2f,%.2f textcolor 1\" >>
outfile.txt",MOUSE_X,MOUSE_Y);\
system(cmd);\

Now your final chosen position is appended to the file "outfile.txt"
with the whole line necessary to create this label.

/Hagen



>  Jon
> 
> On Wed, Oct 13, 2010 at 5:45 AM, Hagen Wierstorf  wrote:
> 
>  On Sat, 2 Oct 2010 12:35:00 -0500, Jon  wrote:
>  > It seems locating an accurate position on a graph to put some
> label or arrow
>  > on needs try and wrong many times if using graph or screen
> coordinate, which
>  > is time-consuming.
> 
>  To find the right label position can be indeed very time-consuming
> if
>  you have a lot of labels to put in a graph. I have solved the
> problem
>  for my purposes by using an interactive way to get the right
> positions.
>  Have a look at http://www.gnuplotting.org/interactive-label-placing/
> [3] for
>  the basic functionality.
>  But I'm not sure if this is the right thing for you, because the
>  position is not given in screen coordinates.
> 
>  /Hagen
> 
> 
> ------------------------------------------------------------------------------
>  Beautiful is writing same markup. Internet Explorer 9 supports
>  standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
>  Spend less time writing and  rewriting code and more time creating
> great
>  experiences on the web. Be a part of the beta today.
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On Thu, 14 Oct 2010 03:25:05 -0500, Jon <devout1977@...> wrote:
> BTW, is it possible to modify the script to output the selected points into
> an output file given a specific format?

Just add this two lines after the "label_number = label_number+1;\"
line in the label_loop.gnu file:

cmd = sprintf("echo \"set label '$0' at %.2f,%.2f textcolor 1\" >>
outfile.txt",MOUSE_X,MOUSE_Y);\
system(cmd);\

Now your final chosen position is appended to the file "outfile.txt"
with the whole line necessary to create this label.

/Hagen





> 
> 
> On Wed, Oct 13, 2010 at 5:45 AM, Hagen Wierstorf
> <hagen@...:
> 
>>
>>
>> On Sat, 2 Oct 2010 12:35:00 -0500, Jon <devout1977@...> wrote:
>> > It seems locating an accurate position on a graph to put some label or
>> arrow
>> > on needs try and wrong many times if using graph or screen coordinate,
>> which
>> > is time-consuming.
>>
>> To find the right label position can be indeed very time-consuming if
>> you have a lot of labels to put in a graph. I have solved the problem
>> for my purposes by using an interactive way to get the right positions.
>> Have a look at http://www.gnuplotting.org/interactive-label-placing/ for
>> the basic functionality.
>> But I'm not sure if this is the right thing for you, because the
>> position is not given in screen coordinates.
>>
>> /Hagen
>>
>>
>>
>>
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On Thu, Oct 7, 2010 at 11:53 AM, Thomas Sefzick <t.sefzick@...> wrote:
>
> it's possilbe using the 'linecolor palette' option.
>
> # if you want to plot a function start here:
> set table 'data'
> plot sin(x)
> unset table
> # if you want to plot data start here:
> temp = 0
> plot 'data' using 1:2:(last=temp,temp=$2,$2>last?1:-1) with linespoints
> linecolor palette

Though I have been actively plumbing the depths of gnuplot and its
community for more than a decade, it always proves to be a deeper well
than I know.

Thanks,

BBands