Hi Bill,
Coming back to the plotPoints function, I was able to plot what I
wanted, but I have some queries :
Color of the points :
Im able to get only 2 colors. I only get blue and pink when I change the
array : value(:,0). The attached image shows trajectories of particles
released from the trailing edge of a plunging airfoil. The points
released from the upper side are colored in Pink and Blue on the lower
side respectively. I'd like to have other colors as well.
Interactive plotPoints:
Also, each time I call plotPloints, I need to click "exit" for it to
proceed to the next step. Is there a way to avoid this. Since I would
like to see the plot dynamically. As a temporary solution, I modified
the loop in plotPoints.C as :
// **** Plotting loop *****
for(int i=0;i<1;i++) // This was for (int i=0 ; i++) before
{
if( i==0 && (plotObject || parameters.plotObjectAndExit) )
answer="plot"; // plot first time through if
plotObject==TRUE
else if( i==1 && parameters.plotObjectAndExit )
So now, only at the end, Im able to see the full plot without having to
click "exit". Is there any other way to proceed without clicking "exit"
?
Array size of points() array :
The array - points() which is an argument to plotPoints works when the
dimension of points() is points(N,0:2), where N is any integer.
Even for 2D problems, I need to define points(N,2) and assign it to
zero. Not that this is a problem, but just an information if anyone
tries
To use this function in 2D.
Thanks,
Dominic
-----Original Message-----
From: overture-bounce@xxxxxxxxxxxxx
[mailto:overture-bounce@xxxxxxxxxxxxx] On Behalf Of #DOMINIC DENVER JOHN
CHANDAR#
Sent: Tuesday, June 16, 2009 11:55 PM
To: overture@xxxxxxxxxxxxx
Subject: [overture] Re: Plot a Point
Thanks Bill, It worked fine..
Dominic
-----Original Message-----
From: overture-bounce@xxxxxxxxxxxxx
[mailto:overture-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Henshaw
Sent: Tuesday, June 16, 2009 10:51 PM
To: overture@xxxxxxxxxxxxx
Subject: [overture] Re: Plot a Point
hi Dominic,
You can use the plotPoints function to plot coloured points (or
spheres).
Here is an example. ...Bill
PlotStuff ps(true,"plot");
GraphicsParameters psp;
...
else if( answer=="plot points" || answer=="plot points with colour"
|| answer=="plot spheres with colour" )
{
const bool plotSpheres = answer=="plot spheres with colour";
const int n=plotSpheres ? 41 : 51;
const int m = plotSpheres ? 2 : 1;
realArray points(n,3), value(n,m);
for( int i=0; i<n; i++ )
{
real radius=i/(n+1.);
real theta=twoPi*i/(n+1.);
points(i,axis1)=cos(theta)*radius;
points(i,axis2)=sin(theta)*radius;
points(i,axis3)=cos(2.*theta)*radius;
value(i,0)=
SQR(points(i,axis1))+SQR(points(i,axis2))+SQR(points(i,axis3));
if( plotSpheres ) value(i,1)=.05; // radius for the sphere
}
psp.set(GI_POINT_SIZE,(real) 6.); // size in pixels
if( answer=="plot points" )
ps.plotPoints(points,psp);
else
ps.plotPoints(points,value,psp); // colour point i by value(i)
}
#DOMINIC DENVER JOHN CHANDAR# wrote:
> Hi,
>
> Is there a way to plot a point at a given location (x,y) using the
> plotStuff class ? or should I use the OpenGL functions ? Basically I
> have a contour plot plotted in a window and i want to plot points at
> different locations (also later with different colors)
>
> I tried something like :
>
> DataPointMapping map;
> map.setDataPoints( points, 1,1);
> MappedGrid mg(map);
> mg.update();
>
> here "points" is of dimension (1, 0:1). But this doesnt work.. I think
> we cannot generate a MappedGrid with just 1 point...?
>
> Any other ways ?
>
> Thanks,
> Dominic
>
>
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particlePath.jpg
Description: particlePath.jpg
