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Hello.<br>
<br>
I know those performance problems. But <u><b>if</b></u> the
transformation is performed, it should <u>not</u> be wrong I think
:) better would be an error message which tells the user that the
image is too big or something...<br>
<br>
<br>
I cannot upload the image (25MB *.png or 5MB *.jpg), but I have
uploaded the jpg to rapidshare, instead. <i>(The png file is about
2MB too big, it won't even be loaded, so I did not upload it)</i><br>
<blockquote>JPG:
<a class="moz-txt-link-freetext" href="http://rapidshare.com/files/455277713/jpg-raster.zip">http://rapidshare.com/files/455277713/jpg-raster.zip</a><br>
ECW: <a class="moz-txt-link-freetext" href="http://rapidshare.com/files/455279357/ecw-map.ecw">http://rapidshare.com/files/455279357/ecw-map.ecw</a><br>
</blockquote>
<br>
I have compressed the file to ecw, too, but it is not
geo-referenced, I think. I tried AU ECW Compressor...because the
manual says, it will add geo-information...but it doesn't....not
from an extra worldfile.<br>
<br>
Well, to load the worldfile of the JPG, you need to change the
getWorldFileExtensions() in WKFRasterDriver.java, I think. Or change
the extension to *.wld... but I'm sure, you know. (however, jgw
seems to be the default one, isn't it?) <br>
<br>
<br>
Regards,<br>
<br>
Marcel<br>
<br>
<br>
<br>
<br>
Am 31.03.2011 17:04, schrieb Juan Lucas Dominguez Rubio:
<blockquote
cite="mid:E43C32BC5843E34FB4C00CDFAAAAF7D8017B538F@australia.prodevelop.local"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
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<div id="idOWAReplyText37810">
<div><font size="3" color="#000000" face="Times New Roman">Hello,
</font></div>
<div>When zooming in and out with a non-ECW image, the
app performs some shift and clip operations to minimize the
amount of memory needed. I have never seen
any strange bevavior there, but there might be a bug, yes.</div>
<div> </div>
<div>gdal_translate (FWTools) is free and creates faster, more
reliable ECW images.</div>
<div> </div>
<div>which format are you using?
<div>can you send the image to the list? (with the georef.
file if it's not a ecw file)</div>
</div>
<div> </div>
<div>Regards,</div>
</div>
<div id="idSignature57279">
<div><font size="2" face="Courier New"><font size="3"
face="Times New Roman">Juan Lucas Domínguez Rubio<br>
</font>---</font></div>
<div><font size="2" face="Courier New"><font size="2"
face="Courier New"><font size="2" face="Courier New">Prodevelop
SL, Valencia (España)</font></font></font></div>
<div>
<div><font size="2" face="Courier New"><font size="2"
face="Courier New"><font size="2" face="Courier New">Tlf.:
96.351.06.12 -- Fax: 96.351.09.68<br>
</font><a moz-do-not-send="true"
href="http://www.prodevelop.es/"><font size="2"
face="Courier New">http://www.prodevelop.es</font></a><br>
<font size="2" face="Courier New">---</font></font></font></div>
</div>
</div>
<div><br>
<hr>
<font size="2" face="Tahoma"><b>De:</b>
<a class="moz-txt-link-abbreviated" href="mailto:gvsig_internacional-bounces@listserv.gva.es">gvsig_internacional-bounces@listserv.gva.es</a> en nombre de
Marcel Schoolmeesters<br>
<b>Enviado el:</b> jue 31/03/2011 16:51<br>
<b>Para:</b> Users and Developers mailing list<br>
<b>Asunto:</b> Re: [Gvsig_english] Importing a raster image
with gvSIG Mobile<br>
</font><br>
</div>
<div>Hey all,<br>
<br>
I've got new interesting findings :-)<br>
<ul>
<li>The error of the height of the image does<u> not appear at
all</u> when I zoom <b>three </b>times. </li>
<li>When I zoom <b>twice</b>, the error appears<u> only in
the middle </u>of the image, but not when I see the
background of the Map! I cannot say exactly,... </li>
<li>But when I does not zoom or<i><b> only once...or four
times or more</b></i>... the image is<u> not resized </u>I
think...it is the original ratio.... </li>
</ul>
I have got some screenshots, so that you might understand it
better :)<br>
<br>
Perhaps, it is a graphical bug? I don't know...perhaps,
somebody's got an idea? would be cool to be fixed!<br>
<br>
<br>
Regards,<br>
<br>
Marcel<br>
<br>
<br>
Am 30.03.2011 16:42, schrieb Marcel Schoolmeesters:
<blockquote>Thanks for the explanation.<br>
<br>
As I said, the ImageExt values are correct...(y is calculated
by _y + _h, I think) .....I have debugged the data flow and
everything is understandable up to this function (and
afterwards. What the function is doing might be clear, and
even the values of the viewRect, too,...after your little
explanation, what should be self-evident :-) <br>
<br>
However, the final lower/left edge of the picture is not shown
at 53.475096504° where it should be, but somewhere at
53.464...and I cannot find the code where this is
calculated...(but better to say that I have given up because
of so many steps...)<br>
<br>
Best regards,<br>
<br>
Marcel<br>
<br>
<br>
Am 30.03.2011 09:32, schrieb Juan Lucas Dominguez Rubio:
<blockquote>
<div id="idOWAReplyText99254">
<div><font size="3" color="#000000" face="Times New Roman">Hello,</font></div>
<div>that method computes the extent of the view when you
add the first layer. The app knows the size of the
screen and the extent of the layer, and their ratios are
different, so you have to do a simple computation to
find out the extent of the new view.</div>
<div> </div>
<div>Maybe you have misunderstood the extent of a layer
and the extent of the view?</div>
<div> </div>
<div>When you add the first layer, the extent of the view
is the smallest rectangle which contains the extent of
the layer and, at the same time, respects the
width/height ratio of the screen, of course.</div>
<div> </div>
<div>Regards,</div>
<div><font size="2" face="Courier New"><font size="3"
face="Times New Roman">Juan Lucas Domínguez Rubio<br>
</font>---</font></div>
</div>
<div id="idSignature16877">
<div><font size="2" face="Courier New"><font size="2"
face="Courier New"><font size="2" face="Courier New">Prodevelop
SL, Valencia (España)</font></font></font></div>
<div>
<div><font size="2" face="Courier New"><font size="2"
face="Courier New"><font size="2" face="Courier
New">Tlf.: 96.351.06.12 -- Fax: 96.351.09.68<br>
</font><a moz-do-not-send="true"
href="http://www.prodevelop.es/"><font size="2"
face="Courier New">http://www.prodevelop.es</font></a><br>
<font size="2" face="Courier New">---</font></font></font></div>
</div>
</div>
<div><br>
<hr>
<font size="2" face="Tahoma"><b>De:</b> <a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:gvsig_internacional-bounces@listserv.gva.es">gvsig_internacional-bounces@listserv.gva.es</a>
en nombre de Marcel Schoolmeesters<br>
<b>Enviado el:</b> mar 29/03/2011 21:20<br>
<b>Para:</b> Users and Developers mailing list<br>
<b>Asunto:</b> Re: [Gvsig_english] Importing a raster
image with gvSIG Mobile<br>
</font><br>
</div>
<div>well, I think the main problem of understanding is in
function MapContext.<b>getExtentFromFullExtentAndImageSize</b>()
... I think the new height etc are calculated there? <br>
<br>
Am 29.03.2011 21:00, schrieb Marcel Schoolmeesters:
<blockquote>Hello, <br>
<br>
I have tried to load a raster image (had to try jpg,
because *.png did not even load), but I am getting a
wrong position of the extent. Anybody got the same
error? <br>
<br>
I have tried the debug mode, but there are too many
functions to catch on. Perhaps anybody can help? <br>
<br>
Somewhere the map origin is changed from the upper edge
to the lower edge, that far I could follow, but then the
image extent (height) and the origin coords (of Y) has
been changed. Why? it seems to be very hard to
understand the whole way of building the image at the
right place. <br>
<br>
However, in attachment the original rectangle and the
changed one are shown with their values while
debugging... <br>
<br>
The lower edge of the final image is positioned between
those Y values (@ 53.464) but it needs to be positioned
at 53.475.... <br>
<br>
what is getRasterTansformation() actually doing? <br>
<br>
<br>
Thanks in advance, if anybody can help. However, that
issue should be fixed, I think. The import of PNG is not
even possible, as I mentioned before.. <br>
<br>
Regards <br>
<br>
Marcel <br>
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