401 reputation
412
bio website shawtyds.wordpress.com
location Durham, United Kingdom
age 41
visits member for 2 years, 7 months
seen Jul 15 at 20:41

Whats to say... well I'm a geek, I've always been a geek and I'll always be a geek.

I love writing software and tinkering with computer related stuff in general.

I run my own I.T consultancy company called "Digital Solutions Computer Software UK", I'm a Pluralsight author and the UK & Europe group manager for Lidnug (One of the largest .NET related user groups on the Linked-In network)

I'm a Microsoft Community Leader, presenter & lecturer of development related topics, oh and a Write a few computer books here and there for things like the Syncfusion Succinctly range.

I work across Linux, Unix, Windows and use lots of different languages in order to ply my trade, I've been working in I.T now for the best part of 30 years and will probably be here for at least another 30.


Jun
23
comment Why do I get these bands on my Height/Dem/Raster
It's worth a try :-) Iv'e also been mucking about with the GDAL .NET/C# bindings. I'm much more at home in managed code :) Will try your idea, and update as/when I have results.
Jun
23
comment Why do I get these bands on my Height/Dem/Raster
Hmmm, exactly what I get too. Just extracted the premade, precut 50 meter tiles from the landform panorama and they line up perfectly, but because there all individual tiles, I'll need to convert and stitch them before there any use, may have to end up using these though, wanted to use gridded heights as I could set my own resolution.
Jun
23
comment Why do I get these bands on my Height/Dem/Raster
PS: can you repeat what you did with yours, but tell me exactly what parameters you entered in your interpolation tool please?
Jun
23
comment Why do I get these bands on my Height/Dem/Raster
YEa, found it myself just a moment ago, downloaded 'release-1600-x64-gdal-mapserver.zip' (Seems to be the only one I could find that had any mention of V2 dev. Page full of downloads, but no logical naming or help as to which ver is which. Anyway, downloaded, into a seperate folder, ran ogr2ogr from there and still no dice, the resulting merged shape, even with the newer version of Ogr2Ogr still creates a banded raster. Personally, given where I am now, I don't think it's the shape file merge. It's either the interpolation tool or the data.
Jun
23
comment Why do I get these bands on my Height/Dem/Raster
How did you get your various versions? The GDAL/OGR2OGR that I'm using are the ones that came bundled with QGis. Also I'm using a 64 bit build, actually I just found all the versions, it'll be easier if I update my question.
Jun
23
comment Why do I get these bands on my Height/Dem/Raster
As well as my previous update, Iv'e even gone through your process manually, doing each shape merge by hand, using exactly the same command line as yourself, but no joy.
Jun
23
comment Why do I get these bands on my Height/Dem/Raster
Addendum to my update above : I do notice, particularly the band that is closest to where I live, does actually coincide with a grid square line, however , manual examination of the data shows no gaps.
Jun
23
comment Why do I get these bands on my Height/Dem/Raster
Placed an update in my post above.
Jun
6
comment Why do I get these bands on my Height/Dem/Raster
Awesome, I'll give that a try over the weekend. I did think of using GDal directly (I have numerous scrips from joining the OS Vector map district) [ Why do the OS make it so bloody difficult? :-( ] , anyway I was being lazy, and up until now I've not had a problem with the QGis joiner. I'll update once I know if this solves the issue.
Jun
1
comment Why do I get these bands on my Height/Dem/Raster
yup, just go to the OS open data site, download the meridian 2 map, gridded height for the entire uk is in there in shapefiles along with other shapefiles for other assets. As per my description I just combined the NZ tiles. RE: your comment, again I checked, and there is (or appears to be) continuous coverage from previous tile to next tile with no gaps, where QGis has joined the shapes
May
31
comment Why do I get these bands on my Height/Dem/Raster
Yea, that thought had crossed my mind too, so I went through the data manually (Painful I can tell you) and couldn't find any 0 values at all. :-(
May
4
comment Looking for qml specification
There is a DTD already available. Take any QML file produced by QGis, look at the first line in the file, the DTD location is specified right there.
Feb
2
comment Can someone give the absolute lowdown on the following list of spatial operators
Hi BradHards, thanks for that tip, I already have spatial indexes on the required tables.
Jan
23
comment Can someone give the absolute lowdown on the following list of spatial operators
Ah yes, now I reread that, I understand what you mean.
Jan
21
comment Can someone give the absolute lowdown on the following list of spatial operators
Hi Luke. I did originally try using an MBR, but then realized I can't rotate it. Unfortunately I have to rotate the box to point in the direction of a GPS bearing so it has to be a polygon. Thanks for the suggestion though.
Jan
21
comment Can someone give the absolute lowdown on the following list of spatial operators
Yea, i hear ya there... the world of I.T is full of standards that no one ever seems to honour, thanks for the info I'll go look for a copy of the paper.
Jan
21
comment Can someone give the absolute lowdown on the following list of spatial operators
WOW!! The link is super useful, had a quick scan, going to read it in more detail a little later.
Dec
18
comment What format is this GPS tracking string?
quite possible, I'm just making an educated guess based on what I see :-) If you re-read the part where I mention the co-ordinates I tried to break them down into decimal minutes, but the values just don't fit correctly.
Sep
29
comment Looking for qml specification
Yea that was my worry, that said it's really not that complex, a weekends detective work and you should be able to figure the structure out yourself quite easily.
Sep
27
comment Looking for qml specification
Yes I have. I wrote a small .NET application to extract the style information used in a QGis project and import it into a web based control system used in-house for one of my clients, so their web maps looked the same as the projects their GIS team where using.