Difference between revisions of "OpenDX"
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The [http://opendx.org/ OpenDX software is a powerful program for visualising multi-dimensional data]. | The [http://opendx.org/ OpenDX software is a powerful program for visualising multi-dimensional data]. | ||
| + | |||
| + | == How to use dx == | ||
| + | Run <code>dx</code>, and then in the '''Data explorer''' or '''DE'''. | ||
| + | * Click on <code>Edit Visual Programs...</code>. | ||
| + | * Select the <code>map.net</code> program created by relax, | ||
| + | |||
| + | Now in the <code>Visual Program Editor</code> or <code>VPE</code>. | ||
| + | * Select the menu entry <code>Execute->Execute on change</code>. | ||
| + | |||
| + | That's it. | ||
| + | |||
| + | You now have a 3D frame, but nothing in it. Therefore the contour levels must be too low or high. From the map file, the values are in the hundreds of thousands. | ||
| + | |||
| + | Then: | ||
| + | * In the main program window, double click on the <code>Isosurface elements</code>. | ||
| + | * Change the values until you see surfaces. In the first the value is 500. I changed this to 500,000. Multiply all by 1000. | ||
| + | * In the second, 100 -> 100000. | ||
| + | * In the third, 20 -> 20000. | ||
| + | * In the last, 7 -> 7000. | ||
| + | |||
| + | This should maybe be performed by the dx.map user function, determining reasonable contour levels. | ||
| + | |||
| + | With a bit of zooming, clicking on <code>File -> Save image</code> in the <code>Surface</code> window, <code>allowing rendering</code>, and outputting to a large TIFF file, <code>save current</code>, then <code>apply</code>. | ||
| + | |||
| + | An example image cropped and converted to PNG in the GIMP at https://gna.org/bugs/download.php?file_id=20641. | ||
| + | |||
| + | Note that for a good resolution plot, you will need many more increments. Using the lower and upper dx.map arguments will be useful to zoom into the space. | ||
== See also == | == See also == | ||
Revision as of 21:42, 24 October 2017
| This article is a stub. Please help to improve the relax wiki by expanding the article. |
The OpenDX software is a powerful program for visualising multi-dimensional data.
How to use dx
Run dx, and then in the Data explorer or DE.
- Click on
Edit Visual Programs.... - Select the
map.netprogram created by relax,
Now in the Visual Program Editor or VPE.
- Select the menu entry
Execute->Execute on change.
That's it.
You now have a 3D frame, but nothing in it. Therefore the contour levels must be too low or high. From the map file, the values are in the hundreds of thousands.
Then:
- In the main program window, double click on the
Isosurface elements. - Change the values until you see surfaces. In the first the value is 500. I changed this to 500,000. Multiply all by 1000.
- In the second, 100 -> 100000.
- In the third, 20 -> 20000.
- In the last, 7 -> 7000.
This should maybe be performed by the dx.map user function, determining reasonable contour levels.
With a bit of zooming, clicking on File -> Save image in the Surface window, allowing rendering, and outputting to a large TIFF file, save current, then apply.
An example image cropped and converted to PNG in the GIMP at https://gna.org/bugs/download.php?file_id=20641.
Note that for a good resolution plot, you will need many more increments. Using the lower and upper dx.map arguments will be useful to zoom into the space.
