Hi everyone,
I committed the changes regarding Sextante Raster Image handling to SVN.
@Peppe
You're right, the sextante raster image, in the way I was seeing it, was
a single-band image to be used in data processing (overlay, raster
combination, hydrology...) where normally only one band is used at
time... No worries, I already modified the code to account for
multi-band images, so now 3-bands JPGs and TIFFs should be visualized
properly. The multi-band image support is not complete though: ideally,
when an image as more than 1 band, the user should be able to choose
what band to use in each of the three RGB channels. This would be
especially useful whit images having more than 3 bands. We will work on
that.
Related to this: the "Raster Style" plugin for the moment only works on
a single band at the time, so it's useful only for single-band images.
Do you want us to merge it with the "Change Raster Image Properties"
plugin, or is it better to keep it as an external plugin?
Yet to be done: support for statistics saved as a tiff tag.
Alberto
On 09/01/2015 15:03 PM, Giuseppe Aruta wrote:
Hi Alberto,
the file I attached to the mail is not a B/W file but a coloured RGB
orthophoto. The question is that the new modified Sextante RasterImage
displays only the 1st band (the red one). And it happens with all the
RGB image files I tried to open (I attached another sample, a JPG from
a screenshot of WMS Geoportale Nazionale).
I tested the RasterStyles.jar, the symbology and Legend. I works very
nice. I think that this should be a part of OJ core ( I saw also the
depency to othre classes: org/openjump/core/rasterimage/RasterSymbology),
thanks
Peppe
2015-01-09 11:23 GMT+01:00 Alberto De Luca - GeA
<alberto.del...@geomaticaeambiente.com
<mailto:alberto.del...@geomaticaeambiente.com>>:
Hi everyone!
@Jukka
Statistics inside the GeoTIFF, as a TAG: I hadn't considered that,
but it shouldn't be a problem reading them. I found some
documentation in this page
<http://www.awaresystems.be/imaging/tiff/tifftags/gdal_metadata.html>,
is it correct if I assume that other items (such as min value, max
value...) are just stored as other elements using the same keys
used in the aux.xml file , e.g.:
...
<Item name="STATISTICS_MAXIMUM">2775</Item>
<Item name="STATISTICS_MINIMUM">540.4</Item>
...
@Ede
My SF account name is bertazza, and yes, testing and debugging
here is paramount, the number of classes/methods where we put our
hands is worrying...
@Giuseppe
Thank you for letting me know what you have been working on. And
I'll try to avoid duplicates in terms of classes related to raster
metadata.
We added the two RasterStyle and Legend classes to try to
consolidate symbology management. We also implemented a plugin
called Raster Styles. In the OJ build that I gave you for testing,
the plugin is available via the raster context menu: right click
on the raster name in the layer panel, and select "Raster Styles".
You should be able to change raster symbology: interval, ramps and
single values are available. The plugin is not complete nor
optimized yet, but you can have a feel of what we're trying to do.
Ubuntu problem: on windows 8 I could open your TIF file without
problems, I see it as nice B/W orthophoto. I wonder what could be
different in Linux. Do you have any idea about where the origin of
the problem could be, maybe JAI?
I will check the problem with "Extract part of image", thank you
for telling me.
Alberto
On 09/01/2015 10:41 AM, edgar.sol...@web.de
<mailto:edgar.sol...@web.de> wrote:
On 09.01.2015 10:09, Alberto De Luca - GeA wrote:
Jukka,
- raster readers: I agree that tidying up a bit would be good, but
honestly I'd need to check them all before recommending anything;
no haste there, let's integrate your changes and we'll clean up after
SNIP
- With regards to the timing to contribute the changes to OJ, unless big
bugs are found or substantial new features are required, they shouldn't
take long. Since we've worked on the source code from OJ 1.7.1-r4004,
we'd need to check if everything is ok with the most recent source code,
but I don't see it as a lengthy operation.
to make it available to a broader test user group i'd like to have it
committed soon, so users can stumble over problems when using the snapshots ;)
what is yoursf.net <http://sf.net> account name?
..ede
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