open TELEMAC-MASCARET The mathematically superior suite of solvers

I loaded some breaklines into BlueKenue and they are displayed pretty bad (see attachment, I guess you can imagine that it should look differently).

Is there anything I can do about it? It doesn't seem to have an influence on the meshing. I'm still wondering though if it is just a problem of displaying the files or if I have some kind of error in my settings...

Can you help me to figure out what's wrong?

Hello,

I guess the mesh would take the actual point within your file. The display may suffer from a coordinate resolution system. You may wish to shift your domain by an arbitrary number so the coordinates of your points are more centrered around (0,0).

Hope this helps,
Sébastien

I loaded some breaklines into BlueKenue and they are displayed pretty bad (see attachment, I guess you can imagine that it should look differently).

Is there anything I can do about it? It doesn't seem to have an influence on the meshing. I'm still wondering though if it is just a problem of displaying the files or if I have some kind of error in my settings...

Can you help me to figure out what's wrong?

Post your files here so we can investigate

Martin

Hi,

I attached an excerpt. The Shapefile is what I import in BlueKenue. Additionally the screenshot of the output of this specific file.

I'm using Win7 Professional, x64, BlueKenue v 3.3.4.

Thanks!

Edit: The zip-File contains the Shapefile incl. supplementary files (shp, shx, prj, dbf)

Hi, I also experience the same jagged appearance of my shape file contours when imported in BK. It seems to me that it is a screen drawing issue because the appearance changes as I zoom in or out. However, it is only noticeable when I really zoom in and so far I have ignored it.

Costas

Yes, this is a display issue.

The OpenGL drivers use floating point arithmetic and are limited to 7 significant digits.
Sub-meter accuracy in UTM coordinate space is not well represented.
If you shift the dataset towards the origin (-144000, -4623000)
the jaggies will disappear.

Martin

Alright, thank you for that fast solution. Then I'll shift my shapes a little bit around.

As far as I've seen it in other threads this will help to avoid issues with the meshing, too.

Yes it will.

Use the menu item "Edit->Shift in X/Y..."

Martin