XY Scope

Library

Sinks

Description

This block realizes the visualization of the evolution of the two regular input signals by drawing the second input as a function of the first at instants of events on the event input port.

Dialog Box

Set Scope parameters
color ($>$0) or mark ($<$0)	4
line or mark size	1
Output window number	1
Output window position	[]
Output window sizes	[600;400]
Xmin	-15
Xmax	15
Ymin	-15
Ymax	15
Buffer size	2

• color : an integer. It is the color number ($>0$) or dash type ($<0$) used to draw the evolution of the input port signal. See plot2d for color (dash type) definitions.
• line or mark size: an integer.
• Output window number:The number of graphic window used for the display. It is often good to use high values to avoid conflict with palettes and Super Block windows. If you have more than one scope, make sure they don't have the same window numbers (unless superposition of the curves is desired).
• Output window position: a 2 vector specifying the coordinates of the upper left corner of the graphic window. Answer [] for default window position.
• Output window sizes: a 2 vector specifying the width and height of the graphic window. Answer [] for default window dimensions.
• Xmin:Minimum values of the first input; used to set up the X-axis of the plot in the graphics window.
• Xmax: Maximum values of the first input; used to set up the X-axis of the plot in the graphics window.
• Ymin:Minimum values of the second input; used to set up the Y-axis of the plot in the graphics window.
• Ymax: Maximum values of the second input; used to set up the Y-axis of the plot in the graphics window.
• Buffer size: To improve efficiency it is possible to buffer the input data. The drawing is only done after each Buffer size call to the block.

Default properties

• always active: no
• direct-feedthrough: no
• zero-crossing: no
• mode: no
• number/sizes of inputs: 2 / 1 1
• number/sizes of outputs: 0 /
• number/sizes of activation inputs: 1 / 1
• number/sizes of activation outputs: 0 /
• continuous-time state: no
• discrete-time state: yes
• name of computational function: scoxy

Interfacing function

scilab/macros/scicos_blocks/sinks/SCOPXY_f.sci

Computational function (type 0)

      subroutine scoxy(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
     &     rpar,nrpar,ipar,nipar,u,nu,y,ny)
c     Copyright INRIA

c     Scicos block simulator
c     ipar(1) = win_num
c     ipar(2) = 0/1 color flag
c     ipar(3) = buffer size
c     ipar(4) = dash,color or mark choice
c     ipar(5) = line or mark size
c     ipar(6) = mode : animated =0 fixed=1
c     ipar(7:8) = window position
c     ipar(9:10) = window size
c
c     rpar(1)=xmin
c     rpar(2)=xmax
c     rpar(3)=ymin
c     rpar(4)=ymax
c
      double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
      integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
      integer nipar,nu,ny

c
c
      double precision xmin,xmax,ymin,ymax,rect(4)
      integer n,verb,cur,na,v,wid,nax(4)
      character*40 strf,buf
      double precision dv
      double precision frect(4)
      character*(4) logf
      character*4 name

      integer kfun
      common /curblk/ kfun

      data frect / 0.00d0,0.00d0,1.00d0,1.00d0/
      data cur/0/,verb/0/

c     
c   

c     
      if(flag.eq.6) then
         N=ipar(3)
         z(2)=u(1)
         z(2+N)=u(2)
         z(1)=1.0d0
      elseif(flag.eq.2) then
         wid=ipar(1)
         N=ipar(3)
c     
         call dr1('xget'//char(0),'window'//char(0),verb,cur,na,v,v,v,
     $        dv,dv,dv,dv)
         if(cur.ne.wid) then
            call dr1('xset'//char(0),'window'//char(0),wid,v,v,v,v,v,
     $           dv,dv,dv,dv)
         endif
c     shift buffer left

         z(2+int(z(1)))=u(1)

         z(2+N+int(z(1)))=u(2)
         z(1)=z(1)+1.0d0
         if(z(1).lt.N) then
            return
         endif
c     draw new point
         if(ipar(4).lt.0) then
            call dr1('xpolys'//char(0),'v'//char(0),v,v,ipar(4),
     &           1,N,v,z(2),z(2+N),dv,dv)
         z(1)=0.0d0
         else
            call dr1('xpolys'//char(0),'v'//char(0),v,v,ipar(4),
     &           1,N,v,z(2),z(2+N),dv,dv)
            z(2)=z(N+1)
            z(2+N)=z(2*N+1)
            z(1)=1.0d0
         endif
      elseif(flag.eq.4) then
         wid=ipar(1)
         N=ipar(3)
         xmin=rpar(1)
         xmax=rpar(2)
         ymin=rpar(3)
         ymax=rpar(4)
         nax(1)=2
         nax(2)=10
         nax(3)=2
         nax(4)=10
         call sciwin()
         call dr1('xget'//char(0),'window'//char(0),verb,cur,na,v,v,v,
     $        dv,dv,dv,dv)
         if(cur.ne.wid) then
            call dr1('xset'//char(0),'window'//char(0),wid,v,v,v,v,v,
     $           dv,dv,dv,dv)
         endif
         call dr1('xsetdr'//char(0),'Rec'//char(0),v,v,v,v,v,v,
     $        dv,dv,dv,dv)
         iwp=7
         if(ipar(iwp).ge.0) then
            call dr1('xset'//char(0),'wpos'//char(0),ipar(iwp),
     $           ipar(iwp+1),v,v,v,v,dv,dv,dv,dv)
         endif
         iwd=9
         if(ipar(iwd).ge.0) then
            call dr1('xset'//char(0),'wdim'//char(0),ipar(iwd),
     $           ipar(iwd+1),v,v,v,v,dv,dv,dv,dv)
         endif
         rect(1)=xmin
         rect(2)=ymin
         rect(3)=xmax
         rect(4)=ymax
         call  setscale2d(frect,rect,'nn'//char(0))
         call dr1('xset'//char(0),'use color'//char(0),ipar(2),0,0,
     &        0,0,v,dv,dv,dv,dv)
         call dr1('xset'//char(0),'alufunction'//char(0),3,0,0,
     &        0,0,v,dv,dv,dv,dv)
         call dr1('xclear'//char(0),'v'//char(0),v,v,v,v,v,v,
     $        dv,dv,dv,dv)
         call dr('xstart'//char(0),'v'//char(0),wid,v,v,v,v,v,
     $        dv,dv,dv,dv)
         buf='t@ @input and output'
         strf='011'//char(0)
         call dr1('xset'//char(0),'thickness'//char(0),1,v,
     $        v,v,v,v,dv,dv,dv,dv)
         call dr1('xset'//char(0),'dashes'//char(0),0,0,0,
     &        0,0,v,dv,dv,dv,dv)
         call dr1('xset'//char(0),'alufunction'//char(0),3,v,v,v,v,v,
     $        dv,dv,dv,dv)
         nxname=40
         call getlabel(kfun,buf,nxname)
         if(nxname.gt.39) nxname=39
         buf(nxname+1:nxname+1)=char(0)
         if ((nxname.eq.1.and.buf(1:1).eq.' ').or.(nxname.eq.0)) then
         else
            call dr('xname'//char(0),buf,v,v,v,v,v,v,dv,dv,dv,dv)
         endif
         call plot2d(rect(1),rect(2),1,1,-1,strf,buf,rect,nax)
         call dr1('xset'//char(0),'thickness'//char(0),ipar(5),v,
     $        v,v,v,v,dv,dv,dv,dv)
         call sxevents()
c first point drawing

         z(1)=0
         
      elseif(flag.eq.5) then
         wid=ipar(1)
         N=ipar(3)
c     
         call dr1('xget'//char(0),'window'//char(0),verb,cur,na,v,v,v,
     $        dv,dv,dv,dv)
         if(cur.ne.wid) then
            call dr1('xset'//char(0),'window'//char(0),wid,v,v,v,v,v,
     $           dv,dv,dv,dv)
         endif
         if(ipar(4).lt.0) then
            call dr1('xpolys'//char(0),'v'//char(0),v,v,ipar(4),
     &           1,int(z(1)),v,z(2),z(2+N),dv,dv)
         else
            call dr1('xpolys'//char(0),'v'//char(0),v,v,ipar(4),
     &           1,int(z(1)),v,z(2),z(2+N),dv,dv)
         endif
         z(1)=0.0d0



         call dr1('xset'//char(0),'alufunction'//char(0),3,v,v,v,v,v,
     $        dv,dv,dv,dv)
      endif

      end