<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=euc-kr">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 18px; font-family: Calibri, sans-serif;">
<div>thanks for that. I downloaded the TFW and TAB files from the Ordnance Survey, put them in the same directory as the tif and did:</div>
<div><br>
</div>
<div>gdal_translate -of VRT -a_srs EPSG:27700 sx88.tif out.vrt</div>
<div><br>
</div>
<div>And ran ctb-tile on out.vrt. It tiled it but into what appear to be weird columns and rows. E.g. Col 14, row 16046 etc. The SDK fails to read this as I suspect it expects 20 cols and 20 rows (it¡¯s 5 metres per pixel resolution)</div>
<div><br>
</div>
<div>I¡¯m not sure what ullr is for. There¡¯s no information about the tif (it¡¯s a British National Grid Square 20kmx20km) but I¡¯ve no idea what lat/lon it covers.</div>
<div><br>
</div>
<div>Alistair</div>
<div>
<div>
<div><br>
</div>
<div>
<div style="font-family: Helvetica; font-size: medium; "><br>
</div>
<div style="font-family: Helvetica; font-size: medium; ">-----------------</div>
<div style="font-family: Helvetica; font-size: medium; ">mov eax,1</div>
<div style="font-family: Helvetica; font-size: medium; ">mov ebx,0</div>
<div style="font-family: Helvetica; font-size: medium; ">int 80</div>
</div>
</div>
</div>
<div><br>
</div>
<span id="OLK_SRC_BODY_SECTION">
<div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style="font-weight:bold">From: </span><<a href="mailto:gdal-dev-bounces@lists.osgeo.org">gdal-dev-bounces@lists.osgeo.org</a>> on behalf of Homme Zwaagstra <<a href="mailto:hrz@geodata.soton.ac.uk">hrz@geodata.soton.ac.uk</a>><br>
<span style="font-weight:bold">Date: </span>Monday, 21 September 2015 08:29<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a>" <<a href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a>><br>
<span style="font-weight:bold">Subject: </span>Re: [gdal-dev] Generating 200x200 tiles<br>
</div>
<div><br>
</div>
<div>
<div text="#000000" bgcolor="#FFFFFF"><br>
<br>
On 19/09/15 08:14, Alistair Young wrote:<br>
<span style="white-space: pre;">> Thanks for that. I tried ctb but just got "Could not get transformation > information from source dataset©÷. Chaning gdal2tiles to output 200x200 > worked ok but the SDK failed to display the tiles. I just have a 4000x4000 >
tif with no geo referencing information so I can only generate raster > profile tiles.</span><br>
<br>
Alistair, you'll have trouble getting anything useful out of any geospatial<br>
tools without inputting datasets that are correctly georeferenced with an<br>
appropriate spatial reference system. Assuming you know the extents of your<br>
4000x4000 raster, you should be able to do this by creating a virtual raster<br>
with gdal_translate using options along the following lines:<br>
<br>
gdal_translate -of VRT -a_srs srs_def -a_ullr ulx uly lrx lry in.tif out.vrt<br>
<br>
Passing out.vrt to ctb should resolve the error, and you'll have more chance<br>
with other tools too.<br>
<br>
Best regards,<br>
<br>
Homme<br>
<br>
<span style="white-space: pre;">> > Alistair > > > ----------------- > mov eax,1 > mov ebx,0 > int 80 > > > > > On 18/09/2015 00:36, "<a class="moz-txt-link-abbreviated" href="mailto:gdal-dev-bounces@lists.osgeo.org">gdal-dev-bounces@lists.osgeo.org</a> on
behalf of Brad > Hards" <a class="moz-txt-link-rfc2396E" href="mailto:gdal-dev-bounces@lists.osgeo.orgonbehalfofbradh@frogmouth.net">
<gdal-dev-bounces@lists.osgeo.org on behalf of bradh@frogmouth.net></a> > wrote: > >> On Thu, 17 Sep 2015 06:03:15 PM Alistair Young wrote: >>> I've been using gdal2tiles to generate zoom levels and tiles and it's >>> working fine but unfortunately the tiles
are 256x256 and don't work with >>> the UK Ordnance Survey mapping SDK, which requires 200x200 tiles. Is >>> there >>> a way to generate these 200x200 tiles? I can generate them using >>> gdal_retile but it can't generate the zoom levels. >> I'd suggest just
hacking the python script. Make a copy, and edit the >> __init__() function to change the tileSize member init to be 200 vs 256. >> >> Worth a quick try at least. >> >> Brad >> >> >> _______________________________________________ >> gdal-dev mailing list
>> <a class="moz-txt-link-abbreviated" href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a> >>
<a class="moz-txt-link-freetext" href="http://lists.osgeo.org/mailman/listinfo/gdal-dev">
http://lists.osgeo.org/mailman/listinfo/gdal-dev</a> > > _______________________________________________ > gdal-dev mailing list >
<a class="moz-txt-link-abbreviated" href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a> >
<a class="moz-txt-link-freetext" href="http://lists.osgeo.org/mailman/listinfo/gdal-dev">
http://lists.osgeo.org/mailman/listinfo/gdal-dev</a></span><br>
<br>
<br>
</div>
</div>
</span>
</body>
</html>