Vector Plotting

[ariefous]

Hello! I`m from Japan and I`ve been using DPLOT approximately for 2 months. Most of the time I use DPLOT to generate 2D scatter plots in order to visualize random positions of tiny particles from my numerical simulations in multiphase flows. There are thousands amount of data(s) to be analyzed and DPLOT has done it perfectly.

Ok, here I have one minor problem, when I try to plot my vector field that represents gas velocity, the magnitude of the vectors are equally drawn. So I cannot really spot which region in my XY plane has the higher velocity distributions. By scanning the value at each point, yes I can read out the value at any regions, but how in the case I want to show the image to viewers, let`s say in the image format such as Bitmaps or Jpeg? Viewers can easily know the velocity distributions if the length of each vector arrow is drawn according to its calculated magnitude, not by just one representative value.

So, what should I do? I tried with Techplot`s Trial Version and it works. This is the link to the example:
http://img25.imageshack.us/my.php?image ... bnwkz4.png
As you can see, we can spot higher velocity regions by looking at the denser part (the longer vector) inside the vector field.

And sorry for my bad english....

Thanks in advance!...

Regards,
ariefous

[DPlotAdmin]

Ok, here I have one minor problem, when I try to plot my vector field that represents gas velocity, the magnitude of the vectors are equally drawn.

They shouldn't be, unless you set the low and high sizes to be the same under Options>Vector Plot. (I assume you're using DPlot's vector plot option, example here: http://www.dplot.com/features.htm#VECTORS)

And sorry for my bad english....

There is no need to apologize. Your English is fine.

[ariefous]

Thanks David !!!

I managed to vary the length of the vectors and it turned out just like I did with Techplot. I think I had mistakenly understand what were the Low and High size actually means...DPLOT actually will vary the length automatically according to the interval between Low and High size...At first, I thought there were only two values will be drawn which are the Low and High, instead of the two values and the values in between... What a shame...Huh

Thanks again for your immediate reply...

DPLOT is an Excellent software !!!

~ariefous~