gnuplot-info — For questions and discussion about gnuplot

Re: [Gnuplot-info] continued lines in Emacs gnuplot-mode

[Dima K. <gn...@di...>]

Elias Assmann <eli...@gm...> writes:

> Hi,
>
> In gnuplot-mode, ‘gnuplot-send-line-to-gnuplot’ (C-c C-l) helpfully 
> searches forward to the end of a continued line.  However, I thought it 
> would be even more helpful to also search backward to the beginning of 
> the logical line.
>
> So below, you will find a version of the function that does that.
>
> HTH,
>
> 	Elias
>
>
> PS: My knowledge of Emacs Lisp is very incomplete …
>
> PPS: gnuplot-mode redefines C-m to newline-and-indent.  This makes it 
> awkward to get a newline without any indention.  In my experience, most 
> Emacs modes use C-j for “smart newline” (whatever that may mean in the 
> mode's context) but leave C-m to mean plain newline.

Hi Elias. The gnuplot emacs interface in the gnuplot distribution is out
of date. A very updated mode is here:

 https://github.com/bruceravel/gnuplot-mode

You should patch that tree (if it doesn't have your fixes already).

Ethan and co: this came up last year, but we didn't do anything about
it. Can we either remove the gnuplot emacs mode from the CVS tree (since
it's maintained in github already), or make it obvious that the
gnuplot.el hosted HERE is a mirror rather than the upstream?

dima

[Gnuplot-info] continued lines in Emacs gnuplot-mode

[Elias A. <eli...@gm...>]

Hi,

In gnuplot-mode, ‘gnuplot-send-line-to-gnuplot’ (C-c C-l) helpfully 
searches forward to the end of a continued line.  However, I thought it 
would be even more helpful to also search backward to the beginning of 
the logical line.

So below, you will find a version of the function that does that.

HTH,

	Elias


PS: My knowledge of Emacs Lisp is very incomplete …

PPS: gnuplot-mode redefines C-m to newline-and-indent.  This makes it 
awkward to get a newline without any indention.  In my experience, most 
Emacs modes use C-j for “smart newline” (whatever that may mean in the 
mode's context) but leave C-m to mean plain newline.


(defun gnuplot-send-line-to-gnuplot ()
   "Sends the current line to the gnuplot program.
Respects continuation lines.
This sets `gnuplot-recently-sent' to 'line."
   (interactive)
   (cond ((equal major-mode 'gnuplot-mode)
	 (let (start
	       end
                ;(start (save-excursion (beginning-of-line) 
(point-marker)))
	       ;(end   (save-excursion (beginning-of-line 2) (point-marker)))
	       )
            (save-excursion
              (end-of-line 0)
              (if (not (looking-at "^$")) (backward-char 1))
              (while (looking-at "\\\\") ; go to beginning of first 
continued line
                (end-of-line 0)
                (if (not (looking-at "^$")) (backward-char 1)))
              (next-line)
              (beginning-of-line)

              (setq start (point-marker)))
            (save-excursion
	     (goto-char start)
	     (end-of-line)
	     (backward-char 1)
	     (while (looking-at "\\\\")	; go to end of last continuation line
	       (end-of-line 2)
	       (backward-char 1))
	     (beginning-of-line 2)
	     (setq end (point-marker)))
	   (if (not (string-match "\\`\\s-*\\'"
				  (buffer-substring-no-properties start end)))
	       (gnuplot-send-region-to-gnuplot start end 'line))
	   end))
	(t
	 (message "You can only send lines in gnuplot-mode buffers to gnuplot.")
	 nil)))

Re: [Gnuplot-info] png term complains something and produces ugly figure

[Tom L. <tl...@cp...>]

On 25 Feb 2014, at 21:03, Jon <dev...@gm...> wrote:

> Dear All,
> 
> When I use set term png, it always gives the following warning
> 
> Could not find/open font when opening font "arial", using internal
> non-scalable font


Jon- (and perhaps Craig, since you /are/ on MacOS)

maybe completely off-the-mark, but my homebrew install of gnuplot on MacOSX suffered from non-scalable font problems. The cause turned out to be the compile options for libgd, which by default was being built without freetype, as I understood it.

The fix- on a Mac, using the homebrew package manager- was:

brew install libgd --with-freetype

May help someone?!

~T

Re: [Gnuplot-info] png term complains something and produces ugly figure

[Ethan A M. <eam...@gm...>]

On Tuesday, 25 February 2014 10:58:18 PM Jon wrote:
> Dear Ethan,
> 
> Thanks for your help, I don't want to bother the system manager, thus I
> turned to the other way. But gnuplot does not return and entry for "help
> fonts gd" or other similar helps, 

Then it must have been installed incorrectly.

> is there further help?

http://gnuplot.sourceforge.net/docs_4.6/gnuplot.pdf

"Fonts" on page 32


In a nutshell put this in ~/.cshrc
setenv GDFONTPATH                /directory/where/your/fonts/live
setenv GNUPLOT_DEFAULT_GDFONT    yourpreferredfontname


Or the bash equivalent, if you are using bash.

	Ethan


> 
> Thanks,
> 
> 
> 
> 
> On Tue, Feb 25, 2014 at 10:09 PM, Ethan A Merritt <eam...@gm...>wrote:
> 
> > On Tuesday, 25 February 2014 10:03:17 PM Jon wrote:
> > > Dear All,
> > >
> > > When I use set term png, it always gives the following warning
> > >
> > > Could not find/open font when opening font "arial", using internal
> > > non-scalable font
> > >
> > > and the plot generated is quite ugly as compared to say what python
> > > generates. I would like to know how I could possibly remove this warning,
> > > and improve the plot quality.
> >
> > - install the font?
> > - pick a different font?
> >
> > See "help fonts gd"
> >
> >
> > > The system I use is linux, more details
> > > please let me know which command to use to find it out.
> > >
> > > Thanks,
> > >
> > > Sincerely,
> > > John
> >
> >

Re: [Gnuplot-info] png term complains something and produces ugly figure

[Jon <dev...@gm...>]

Dear Ethan,

Thanks for your help, I don't want to bother the system manager, thus I
turned to the other way. But gnuplot does not return and entry for "help
fonts gd" or other similar helps, is there further help?

Thanks,




On Tue, Feb 25, 2014 at 10:09 PM, Ethan A Merritt <eam...@gm...>wrote:

> On Tuesday, 25 February 2014 10:03:17 PM Jon wrote:
> > Dear All,
> >
> > When I use set term png, it always gives the following warning
> >
> > Could not find/open font when opening font "arial", using internal
> > non-scalable font
> >
> > and the plot generated is quite ugly as compared to say what python
> > generates. I would like to know how I could possibly remove this warning,
> > and improve the plot quality.
>
> - install the font?
> - pick a different font?
>
> See "help fonts gd"
>
>
> > The system I use is linux, more details
> > please let me know which command to use to find it out.
> >
> > Thanks,
> >
> > Sincerely,
> > John
>
>

Re: [Gnuplot-info] png term complains something and produces ugly figure

[Craig D. <def...@bo...>]

I have the same issue.  I "solved" it by using pngcairo instead of png.  For some reason, pngcairo finds the macOS fonts, while png appears not to.


On Feb 25, 2014, at 10:03 PM, Jon <dev...@gm...> wrote:

> Dear All,
> 
> When I use set term png, it always gives the following warning
> 
> Could not find/open font when opening font "arial", using internal
> non-scalable font
> 
> and the plot generated is quite ugly as compared to say what python
> generates. I would like to know how I could possibly remove this warning,
> and improve the plot quality. The system I use is linux, more details
> please let me know which command to use to find it out.
> 
> Thanks,
> 
> Sincerely,
> John
> ------------------------------------------------------------------------------
> Flow-based real-time traffic analytics software. Cisco certified tool.
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> _______________________________________________
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> 

Re: [Gnuplot-info] png term complains something and produces ugly figure

[Ethan A M. <eam...@gm...>]

On Tuesday, 25 February 2014 10:03:17 PM Jon wrote:
> Dear All,
> 
> When I use set term png, it always gives the following warning
> 
> Could not find/open font when opening font "arial", using internal
> non-scalable font
> 
> and the plot generated is quite ugly as compared to say what python
> generates. I would like to know how I could possibly remove this warning,
> and improve the plot quality.

- install the font?
- pick a different font?

See "help fonts gd"


> The system I use is linux, more details
> please let me know which command to use to find it out.
> 
> Thanks,
> 
> Sincerely,
> John

[Gnuplot-info] png term complains something and produces ugly figure

[Jon <dev...@gm...>]

Dear All,

When I use set term png, it always gives the following warning

Could not find/open font when opening font "arial", using internal
non-scalable font

and the plot generated is quite ugly as compared to say what python
generates. I would like to know how I could possibly remove this warning,
and improve the plot quality. The system I use is linux, more details
please let me know which command to use to find it out.

Thanks,

Sincerely,
John

Re: [Gnuplot-info] gnuplot syntax highlighting in vim

[Andrew R. <an...@gm...>]

I have notified the vim_dev mailing list of the new syntax file, and asked
if it could be included in the vim distribution.

Andy


On Mon, Feb 24, 2014 at 2:27 PM, Tait <gnu...@t4...> wrote:

>
> Could you perhaps get this included with vim -- i.e. update their
> included syntax file? It's certainly nice for us to know, but most
> users probably just use what ships by default with vim.
>
>
> Andrew Rasmussen <an...@gm...> said (on 2014/02/24):
> > I have created an updated version of the gnuplot syntax highlighting file
> > for vim.  It is available at
> > http://www.vim.org/scripts/script.php?script_id=4873.
> > ...
> > The version of gnuplot.vim that ships with vim is 11 years out of date...
> > Please let me know if you have questions/comments/bugs.
> >
> > Andy
>

Re: [Gnuplot-info] gnuplot syntax highlighting in vim

[Tait <gnu...@t4...>]

Could you perhaps get this included with vim -- i.e. update their
included syntax file? It's certainly nice for us to know, but most
users probably just use what ships by default with vim.


Andrew Rasmussen <an...@gm...> said (on 2014/02/24):
> I have created an updated version of the gnuplot syntax highlighting file
> for vim.  It is available at
> http://www.vim.org/scripts/script.php?script_id=4873.
> ...
> The version of gnuplot.vim that ships with vim is 11 years out of date...
> Please let me know if you have questions/comments/bugs.
> 
> Andy

[Gnuplot-info] gnuplot syntax highlighting in vim

[Andrew R. <an...@gm...>]

Hello gnuplot+vim users:

I have created an updated version of the gnuplot syntax highlighting file
for vim.  It is available at
http://www.vim.org/scripts/script.php?script_id=4873.

All you need to do to install it is place it in ~/.vim/syntax/ under
*nix/Mac OS, or $HOME/vimfiles/syntax/ on Windows (so I'm told).

The version of gnuplot.vim that ships with vim is 11 years out of date, and
the only other one I found was by Jim Eberle in 2006 (
http://www.vim.org/scripts/script.php?script_id=1737).

Please let me know if you have questions/comments/bugs.

Andy

[Gnuplot-info] Mapping labels with point shapes and sizes

[Mahmood N. <nt_...@ya...>]

Hi,
I want map some labels with points with different sizes. For example, assume I have these labels in my chart

16, 32, 64

Then I want to have this map

16 -> ps 1
32 -> ps 2
64 -> ps 3

How that is possible with symbols? The pseudocode I am trying to write is

    symbol(N) = strcol(N) ne "16" ? ps 1
    symbol(N) = strcol(N) ne "32" ? ps 2
    symbol(N) = strcol(N) ne "64" ? ps 3
    plot for [N=2:15] 'data.txt' using 1:2:(symbol(N)) w labels

How can I change that to a working code?



 
Regards,
Mahmood

[Gnuplot-info] custom plot

[Mahmood N. <nt_...@ya...>]

Hello,
I have a data file which looks like this

"Vendor"    "2000" "2001" "2002" "2003"
V1                   32     64
V2            64            32

As you can see some years are empty. For example 2000 and 2003 are empty for V1 and 2001 and 2003 are empty for V2. I don't want to add 0 for them.

The X-axis contains 2000, 2001, 2002 and 2003 and the Y-axis contains V1 and V2. 

Also note that I want to have variable point sizes. For example the value of 32 is a point with 'ps 1' and the value of 64 is a point with 'ps 2'.


Here is what I wrote


set xtics ("2000" 0, "2001" 1, "2002" 2, "2003" 3)
set ytics ("V1" 0, "V2" 1)
plot 'data.txt' using "2000":"Vendor", \
     '' using "2001":"Vendor", \
     '' using "2002":"Vendor", \
     '' using "2003":"Vendor"

But it doesn't work and says "x range is not valid".
How can I do the job?



Regards,
Mahmood 

Re: [Gnuplot-info] a way to force plot to connect?

[Hans-Bernhard B. <HBB...@t-...>]

On 23.02.2014 02:30, Jon wrote:

> I know plot by default will not connect two points if they are separated by
> a blank line.

Your knowledge is incomplete, then.  There's no "by default" involved. 
If they're separated, they're separated.

> I wonder
> whether there is a way to force connecting nearby points even they are
> separated by blanks.

Strip out the separators before passing the data to gnuplot, or 
on-the-fly, e.g.:

    plot '< sed -e "/^$/d" input'

[Gnuplot-info] a way to force plot to connect?

[Jon <dev...@gm...>]

Dear All,

I know plot by default will not connect two points if they are separated by
a blank line. But data from a specific output from a software has data
readily isolated into different blocks separated by a line, for example

  0.0000000E+00  0.0000000E+00  0.0000000E+00  0.1562500E-01
   1      -23.821478
   2       -4.218649
   3       -4.218649
   4       -4.218621
   5        8.602143
   6       10.708182

  0.2500000E-01  0.0000000E+00  0.0000000E+00  0.0000000E+00
   1      -23.816546
   2       -4.251996
   3       -4.222201
   4       -4.222177
   5        8.639374
   6       10.692756

  0.5000000E-01  0.0000000E+00  0.0000000E+00  0.0000000E+00
   1      -23.801388
   2       -4.349303
   3       -4.232706
   4       -4.232682
   5        8.747586
   6       10.649874

...

Thus, if I issue the following command,

p [] [] \
  VASP u 2 ev 18::1 w  lp, \
  VASP u 2 ev 18::2 w  lp, \
  VASP u 2 ev 18::3 w  lp, \
  VASP u 2 ev 18::4 w  lp, \
  VASP u 2 ev 18::5 w  lp

then plotted points are broken although I issued w lp option. I wonder
whether there is a way to force connecting nearby points even they are
separated by blanks.

Thanks,

Sincerely,
John

Re: [Gnuplot-info] 1D plot

[Mahmood N. <nt_...@ya...>]

Thanks. Hadn't noticed about 

   plot '-'

! I thought it takes only file names

 
Regards,
Mahmood



On Thursday, February 20, 2014 10:04 AM, sfeam <eam...@gm...> wrote:
On Wednesday, 19 February 2014 09:52:14 PM Mahmood Naderan wrote:
> 
> Hi
> I want to draw a 1D plot with the following data points
>      "name"     "value"
>        A1          2
>        A2         10
> 
> and something which looks like
> 
> 
> 
>     A1           A2
> ----+------------+-------
>     2            10
> 
> All I see in the examples are 2D plots. 


set term dumb
set border 0
set xzeroaxis
unset ytics
set xtics axis scale 0.1 offset 0,1
set xrange [0:12]

plot '-' using 2:(0):1 with labels offset 0,1
        A1          2
        A2         10
e


             A1                                               A2
  +...........+...........+............+...........+...........+...........+
  0           2           4            6           8           10          12






> 
> Any hint is greatly appreciated.
> 
> Regards,
> Mahmood 

Re: [Gnuplot-info] 1D plot

[sfeam <eam...@gm...>]

On Wednesday, 19 February 2014 09:52:14 PM Mahmood Naderan wrote:
> 
> Hi
> I want to draw a 1D plot with the following data points
>      "name"     "value"
>        A1          2
>        A2         10
> 
> and something which looks like
> 
> 
> 
>     A1           A2
> ----+------------+-------
>     2            10
> 
> All I see in the examples are 2D plots. 


set term dumb
set border 0
set xzeroaxis
unset ytics
set xtics axis scale 0.1 offset 0,1
set xrange [0:12]

plot '-' using 2:(0):1 with labels offset 0,1
        A1          2
        A2         10
e


             A1                                               A2
  +...........+...........+............+...........+...........+...........+
  0           2           4            6           8           10          12





> 
> Any hint is greatly appreciated.
> 
> Regards,
> Mahmood 

[Gnuplot-info] 1D plot

[Mahmood N. <nt_...@ya...>]

Hi
I want to draw a 1D plot with the following data points
     "name"     "value"
       A1          2
       A2         10

and something which looks like



    A1           A2
----+------------+-------
    2            10

All I see in the examples are 2D plots. 

Any hint is greatly appreciated.

Regards,
Mahmood 

[Gnuplot-info] Trouble with bar colors and separation

[<gp...@bl...>]

Hi,
I would like to have 3 (or more) groups of bars, each group in its own colour. Each group shows the same points over time. I don't want to mix them in the normal way. 
However, until now I have not been able to produce this.
Example 1, seems to be the correct way to do it. I get more or less what I want, but only with a single colour. 
In example 2, I get the colours to work the way I want, but the group names are not working and the groups are no longer separated?
How can I get the group names back and separate the bar groups like in example 1?
Ideally I would like to have the points in each group numbered 1,2,etc and the groups with colours in a key. Is there a way to get exactly what I want? 
Thanks,
J.
Example data:
Time1;15;11;12;13;11;10;10;11;15;11;12
Time2;8;9;8;7;8;10;11;8;9;12;13
Time3;4;5;6;4;3;4;5;6;7;2;3
Example 1 (single colour):
set auto x
set yrange [0:16]
set ylabel 'Number'
set xlabel 'Group'
set style data histogram
set style histogram cluster gap 5
set style fill solid border rgb "black"
unset key
set datafile separator ";"
plot \
'data.dat' using 2:xtic(1) ls 1, \
'data.dat' using 3:xtic(1) ls 1, \
'data.dat' using 4:xtic(1) ls 1, \
'data.dat' using 5:xtic(1) ls 1, \
'data.dat' using 6:xtic(1) ls 1, \
'data.dat' using 7:xtic(1) ls 1, \
'data.dat' using 8:xtic(1) ls 1, \
'data.dat' using 9:xtic(1) ls 1, \
'data.dat' using 10:xtic(1) ls 1, \
'data.dat' using 11:xtic(1) ls 1, \
'data.dat' using 12:xtic(1) ls 1
Example 2 (force muli-colour, but problems with group names and separation):
set auto x
set yrange [0:16]
set ylabel 'Number'
set xlabel 'Group'
set style data histogram
set style histogram cluster gap 5
set style fill solid border rgb "black"
unset key
set datafile separator ";"
set style line 1 lc rgb 'blue'  
set style line 2 lc rgb 'green' 
set style line 3 lc rgb 'yellow' 
plot \
'data.dat' every ::0::0 using 2:xtic(1) ls 1, \
'data.dat' every ::0::0 using 3:xtic(1) ls 1, \
'data.dat' every ::0::0 using 4:xtic(1) ls 1, \
'data.dat' every ::0::0 using 5:xtic(1) ls 1, \
'data.dat' every ::0::0 using 6:xtic(1) ls 1, \
'data.dat' every ::0::0 using 7:xtic(1) ls 1, \
'data.dat' every ::0::0 using 8:xtic(1) ls 1, \
'data.dat' every ::0::0 using 9:xtic(1) ls 1, \
'data.dat' every ::0::0 using 10:xtic(1) ls 1, \
'data.dat' every ::0::0 using 11:xtic(1) ls 1, \
'data.dat' every ::0::0 using 12:xtic(1) ls 1, \
'data.dat' every ::1::1 using 2:xtic(1) ls 2, \
'data.dat' every ::1::1 using 3:xtic(1) ls 2, \
'data.dat' every ::1::1 using 4:xtic(1) ls 2, \
'data.dat' every ::1::1 using 5:xtic(1) ls 2, \
'data.dat' every ::1::1 using 6:xtic(1) ls 2, \
'data.dat' every ::1::1 using 7:xtic(1) ls 2, \
'data.dat' every ::1::1 using 8:xtic(1) ls 2, \
'data.dat' every ::1::1 using 9:xtic(1) ls 2, \
'data.dat' every ::1::1 using 10:xtic(1) ls 2, \
'data.dat' every ::1::1 using 11:xtic(1) ls 2, \
'data.dat' every ::1::1 using 12:xtic(1) ls 2, \
'data.dat' every ::2::2 using 2:xtic(1) ls 3, \
'data.dat' every ::2::2 using 3:xtic(1) ls 3, \
'data.dat' every ::2::2 using 4:xtic(1) ls 3, \
'data.dat' every ::2::2 using 5:xtic(1) ls 3, \
'data.dat' every ::2::2 using 6:xtic(1) ls 3, \
'data.dat' every ::2::2 using 7:xtic(1) ls 3, \
'data.dat' every ::2::2 using 8:xtic(1) ls 3, \
'data.dat' every ::2::2 using 9:xtic(1) ls 3, \
'data.dat' every ::2::2 using 10:xtic(1) ls 3, \
'data.dat' every ::2::2 using 11:xtic(1) ls 3, \
'data.dat' every ::2::2 using 12:xtic(1) ls 3

Re: [Gnuplot-info] Binary Plot by C++

[<am...@gm...>]

Found out the solution



set pm3d map
;sp 'dataBinary.dat' binary record=(100,-1) format='%f' u 1:2:3 w pm3d


here record=(100,-1) will tell gnuplot that each isoline contains 100 data points
and -1 will tell that it has to be read upto end of file. 




So we dont need a blank line in binary files. 



Cheers
Amol

From: am...@gm...<am...@gm...>
To: <gnu...@li...>
Sent: Saturday, February 15, 2014
Subject: [Gnuplot-info] Binary Plot by C++

Dear All,

Please have a look at the C++ code to generate a binary data which can be plotted by the 
gnuplot. I am having trouble in introducing a blank line in the binary file so that gnuplot
can plot it as pm3d map.

Thank you,

//////////////////////////////////////////////////////////////////////////////////////////////
/*
A 2D binary data generated by the code can be plotted by
gnuplot> p 'dataBinary.dat' binary format='%f%f%f' u 1:3 w l

which is equivalent to plot the ASCII data as
gnuplot> p 'dataAscii.dat' u 1:3 w l

The pm3d map plot can be plotted for ASCII data as follows,
provided one should have a blank line after each set of data.
Blank line should be introduced after the completion of inner
'for loop' in the following code. 

gnuplot> set pm3d map; 
gnuplot> sp 'dataAscii.dat' u 1:2:3 w pm3d

;How one can plot the pm3d data in binary file format. The 
only thing missing is the introduction of blank line in the 
binary data which should be understood by the gnuplot.

gnuplot> set pm3d map; 
gnuplot> sp 'dataBinary.dat' binary format='%f%f%f' u 1:2:3 w pm3d; 

The above command does not plot a pm3d from binary data as there
is a blank line missing in it.
*/

#include <iostream>
#include <cmath>
#include <cstdlib>
#include <fstream>
#include <cstdio>
#include <iomanip>
using namespace std

;struct Data
{
 float x,y,z
;}


;int main()
{
 ofstream outf("dataBinary.dat",ios::binary)
; //ofstream outf("dataAscii.dat",ios::out)
; 
 Data myData[100]
; 
 for(int i=0;i<100;i++)
 {
  for(int j=0;j<100;j++)
  {
   myData[j].x = i
;   myData[j].y = j
;   myData[j].z = sqrt(i+j)
;   
   // writing ASCII data
   //outf << endl << myData[j].x << setw(15) << myData[j].y << setw(15) << myData[j].z
;  }
   //outf << endl ; // for ascii data to be plotted as pm3d by gnuplot
   
   // writing binary data
   outf.write((char *)(&myData),sizeof(myData)); 
 }
 
 outf.close()
; 
 cout << endl
; return 0
;}
//////////////////////////////////////////////////////////////////////////////////////////////


------------------------------------------------------------------------------
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[Gnuplot-info] Binary Plot by C++

[<am...@gm...>]

Dear All,

Please have a look at the C++ code to generate a binary data which can be plotted by the 
gnuplot. I am having trouble in introducing a blank line in the binary file so that gnuplot
can plot it as pm3d map.

Thank you,

//////////////////////////////////////////////////////////////////////////////////////////////
/*
A 2D binary data generated by the code can be plotted by
gnuplot> p 'dataBinary.dat' binary format='%f%f%f' u 1:3 w l

which is equivalent to plot the ASCII data as
gnuplot> p 'dataAscii.dat' u 1:3 w l

The pm3d map plot can be plotted for ASCII data as follows,
provided one should have a blank line after each set of data.
Blank line should be introduced after the completion of inner
'for loop' in the following code. 

gnuplot> set pm3d map; 
gnuplot> sp 'dataAscii.dat' u 1:2:3 w pm3d;

How one can plot the pm3d data in binary file format. The 
only thing missing is the introduction of blank line in the 
binary data which should be understood by the gnuplot.

gnuplot> set pm3d map; 
gnuplot> sp 'dataBinary.dat' binary format='%f%f%f' u 1:2:3 w pm3d; 

The above command does not plot a pm3d from binary data as there
is a blank line missing in it.
*/

#include <iostream>
#include <cmath>
#include <cstdlib>
#include <fstream>
#include <cstdio>
#include <iomanip>
using namespace std;

struct Data
{
 float x,y,z;
};


int main()
{
 ofstream outf("dataBinary.dat",ios::binary);
 //ofstream outf("dataAscii.dat",ios::out);
 
 Data myData[100];
 
 for(int i=0;i<100;i++)
 {
  for(int j=0;j<100;j++)
  {
   myData[j].x = i;
   myData[j].y = j;
   myData[j].z = sqrt(i+j);
   
   // writing ASCII data
   //outf << endl << myData[j].x << setw(15) << myData[j].y << setw(15) << myData[j].z;
  }
   //outf << endl ; // for ascii data to be plotted as pm3d by gnuplot
   
   // writing binary data
   outf.write((char *)(&myData),sizeof(myData)); 
 }
 
 outf.close();
 
 cout << endl;
 return 0;
}
//////////////////////////////////////////////////////////////////////////////////////////////

Re: [Gnuplot-info] u3d terminal

[Martin G. <mar...@uc...>]

Thanks Ethan. Sorry for not having been clear enough in my question. I 
understand GNUPlot creates 2D projection of 3D data, but when I use the 
x11 terminal, I'm assuming GNUPlot uses some kind of 3D data structure 
to create the graph that I can rotate, zoom, etc. Well, would that be 
possible to use the same data structure to create a u3d file that I can 
incorporate into a pdf using LaTeX? That would be quite awesome. 
Alternatively, is there an open-source alternative that would allow me 
to do so? Thanks a lot! Martin

On 02/14/2014 09:08 AM, Ethan Merritt wrote:
> Gnuplot does not output true 3D graphs.  It outputs a 2D projection. 
>  Storing it as u3d would not make sense.
>
>
> On Fri, Feb 14, 2014 at 8:44 AM, Martin Genet 
> <mar...@uc... 
> <mailto:mar...@uc...>> wrote:
>
>     Hello:
>
>     Is there a way to export a Gnuplot 3D graph to u3d, for embedding
>     into a
>     pdf? Thanks!
>
>     Martin
>
>
>
>     ------------------------------------------------------------------------------
>     Android apps run on BlackBerry 10
>     Introducing the new BlackBerry 10.2.1 Runtime for Android apps.
>     Now with support for Jelly Bean, Bluetooth, Mapview and more.
>     Get your Android app in front of a whole new audience.  Start now.
>     http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk
>     _______________________________________________
>     gnuplot-info mailing list
>     gnu...@li...
>     <mailto:gnu...@li...>
>     Membership management via:
>     https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>
>

Re: [Gnuplot-info] u3d terminal

[Ethan M. <eam...@gm...>]

Gnuplot does not output true 3D graphs.  It outputs a 2D projection.
 Storing it as u3d would not make sense.


On Fri, Feb 14, 2014 at 8:44 AM, Martin Genet <
mar...@uc...> wrote:

> Hello:
>
> Is there a way to export a Gnuplot 3D graph to u3d, for embedding into a
> pdf? Thanks!
>
> Martin
>
>
>
>
> ------------------------------------------------------------------------------
> Android apps run on BlackBerry 10
> Introducing the new BlackBerry 10.2.1 Runtime for Android apps.
> Now with support for Jelly Bean, Bluetooth, Mapview and more.
> Get your Android app in front of a whole new audience.  Start now.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via:
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>

[Gnuplot-info] u3d terminal

[Martin G. <mar...@uc...>]

Hello:

Is there a way to export a Gnuplot 3D graph to u3d, for embedding into a 
pdf? Thanks!

Martin

Re: [Gnuplot-info] Binary file plotting

[keghn <ke...@ne...>]

http://ndevilla.free.fr/gnuplot/



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