Re: [Plplot-general] Line break for plcont

[<koi...@ya...>]

Hi Anan,


Thank you very much for your quick response, and for the detailed information you kindly sent me.

After reading through PLplot document I realized that my first email was not very clear and might have confused you.

Let me show my code first:

#########################################
# CODE STARTS FROM HERE (FORTRAN)
#########################################
  subroutine plplot_contour(lclab,ccol,clskip,clspace,cthick,shedge,xg,yg,zg)

    implicit none
    logical         , intent(in) :: lclab
    integer(4)      , intent(in) :: ccol, clskip
    real(8)         , intent(in) :: clspace
    real(8)         , intent(in) :: cthick
    real(8)         , intent(in) :: shedge(:)
    real(8)         , intent(in) :: xg(:), yg(:), zg(:,:)
    ! work
    integer(4) :: nxc, nyc
    integer(4) :: i, nshedge, sigdig

    nxc = size(zg,1)
    nyc = size(zg,2)

    nshedge = size(shedge)

    call plcol0(ccol)
    call plwidth(cthick)

    do i=1, nshedge

      if( shedge(i)>=0 )then ! solid line
        call pllsty(1)
      else                   ! broken line
        call pllsty(2)
      endif

      if( lclab .and. mod(i-1,clskip)==1 )then                 ! with label
        call pl_setcontlabelparam( 0.01D0, 0.6D0, clspace, 1)
      else                                                     ! without label
        call pl_setcontlabelparam( 0.01D0, 0.6D0, clspace, 0)
      endif
      sigdig = numsigdig( shedge(i) )
      call pl_setcontlabelformat(4,sigdig)
      call plcont( zg , 1, nxc, 1, nyc, &
                & (/shedge(i)/), xg, yg )
    enddo

  end subroutine plplot_contour
############################################################
# CODE ENDS HERE (Many thanks again for supporting FORTRAN!)
############################################################

This is a FORTRAN code which takes a 2-dimentional array and plot it with plcont, where
I also use pl_setccontlabelparam to specify how far contour labels stand "off lines".

In this specific case, I suppose that the best example would be Demo09-01: http://plplot.org/examples.php?demo=09 ,
, and I tried to ask if countour labels could be placed in line-break, e,g, : https://docs.generic-mapping-tools.org/6.3/gallery/ex13.html.



Shozee

> ----- Original Message -----
> 
> From: "Alan W. Irwin" <Ala...@gm...>
> To: "koi...@ya..." <koi...@ya...>
> Cc: "plp...@li..." <plp...@li...>
> Date: 2022/01/18 火 13:32
> Subject: Re: [Plplot-general] Line break for plcont
> 
> 
> On 2022-01-18 12:19+0900 koi...@ya... wrote:
> 
> [...]
> > There is one option I wish I could have in plplot: making a linebreak to put labels in between.
> >
> > To be precise, there may be two options. One is, make a line, put a white box on the line, then put numbers in.
> >
> > The other option is, literally break a line (draw two lines with some space) and put numbers in between.
> >
> > (Both look good to me).
> >
> >
> >
> >
> > Hopefully anyone can spare some time to consider adding it or tell me how ?
> 
> Hi Shozee:
> 
> I am answering you on the assumption your subject line should have been "line break for PLplot"
> since you did not mention plcont anywhere inside your email.
> 
> If that assumption is correct I suggest you take a look at pllegend
> which was designed to give users tremendous control over how text (and
> graphics) are arranged within a legend (within a plot).  Of course,
> that enormous capability makes its API complex, but check the
> [documentation of that
> API](http://plplot.org/docbook-manual/plplot-html-5.15.0/pllegend.html)
> to see whether that API might provide exactly what you need.  That API
> is demonstrated in a simplistic way in [example
> 4](http://plplot.org/examples.php?demo=04) and [example
> 26](http://plplot.org/examples.php?demo=26) which are useful to show
> how to turn everything off other than the small subset of that API
> that you need.  That API is demonstrated in a more comprehensive way
> in [example 33](http://plplot.org/examples.php?demo=33).
> 
> Good luck and let us know how it goes!
> 
> Alan
> __________________________
> Alan W. Irwin
> 
> Research affiliation with the Department of Physics and Astronomy,
> University of Victoria, Victoria, BC, Canada.
> 
> Programming affiliations with the FreeEOS equation-of-state
> implementation for stellar interiors (freeeos.sf.net); the Time
> Ephemerides project (timeephem.sf.net); PLplot scientific plotting
> software package (plplot.org); the libLASi project
> (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
> and the Linux Brochure Project (lbproject.sf.net).
> __________________________
> 
> Linux-powered Science
> __________________________
>