19

If you simply want to dissolve the edges and are happy with having one large multipolygon feature of all buildings, you can simply use the fTools "Dissolve" tool ("Vector/Geoprocessing/Dissolve"). If you want to keep the attributes (in the case of OS Vector that would only be the ID, which seems to be rather arbitrary), you can split the dissolved vector ...


11

Those leading figures you ask about are the Eastings and Northings of the SW corner of the "medium" square "U" which is inside its parent large square "S". Each large square is 500km wide, as you state. Each large square is further subdivided into 25 "medium" squares, 100km wide. I call them medium squares because they too, as you know, are subdivided ...


11

The accepted method did not work for me because my basemap layer wouldn't show up in the Input Features dropdown. I solved this by doing the following: At the View menu, choose Data Frame Options. At the Data Frame Tab look for "Clip Options" Choose Clip to shape Then click the Specify Shape button Then select the boundary layer as input Apply and the ...


9

KML files are always WGS84/lat lon (EPSG:4326). Save the KML file as an EPSG:27700 shapefile instead. Alternatively, you could download the Ordnance Survey OpenData Boundary-Line dataset, which is already in EPSG:27700. See: https://www.ordnancesurvey.co.uk/opendatadownload/products.html


8

Currently (September 2016) there is a new map service in beta status created by grough Limited in the UK. That has based OpenStreetMap Data and combined Ordnance Survey styles (as close as possible) for Hill Walking. This website only contains Great Britain (England, Scotland and Wales.) http://geo.gy/ Please note there are limitations like in Birmingham ...


7

Many of these answers are now out of date with dead links. There is useful github here with OS National Grid Shapefiles at various scales: https://github.com/charlesroper/OSGB_Grids


7

First of all, some performance metrics, comparing the two different ways of producing points for a random selection of a million points. create table test (id serial, x real, y real, geom geometry(POINT, 27700)); insert into test (x, y) select random(), random() from generate_series(1, 1000000); update test set geom = ST_SetSRID(ST_MakePoint(x, y),27700); ...


6

The SLDs were originally created for our own use in GeoServer which supports several vendor specific options that we use for our OS OnDemand Web Services, so there are some edits that you need to manually make to the SLDs for them to work in QGIS. The first is that in the SLDs we top and tail each rule with the <FeatureTypeStyle> </...


6

For administrative boundaries, GADM is always the best free source: http://www.gadm.org/download adm_2 includes the counties and larger town boundaries. If you need more, have a look at what Ordnance Survey offers as OpenData: http://www.ordnancesurvey.co.uk/business-and-government/products/boundary-line.html For the post code data (which is not ...


6

The answer is quite simple: "Spot heights – shown as a number beside a dot – appear at strategic points, including along roads where they level out at the top or foot of a hill. These can be a useful guide where there aren't many contour height numbers."


5

I'm assuming that you are using the Meridian 2 data from the Ordnance Survey and have used that and your data to create the chart below. I have stripped away the parts of your code that seemed to me to be redundant. Basically as far as I can see you want to automatically remove points that do not fall within the area in question, in this case the county of ...


5

Here, the XSL file is a style sheet language file (XSLT, or eXtensible Stylesheet Language Transformations) for transforming the XML file into other XML documents or other objects such as HTML, plain text, pdf, etc. A priori nothing to do with QGIS, especially if one looks OS MasterMap® style guidance Transforming GML using XSLT These styles are also ...


5

I think you'll need to georeference the base image and then capture your vector layers manually drawing over it. This seems like a similar proccess: http://geo.nls.uk/urbhist/guides_vectorlayerqgis.html but not exactly what you are looking for. If you're unfamiliar with georeferencing this looks like a good guide as well: http://qgis.spatialthoughts....


5

Process. Close QGIS. Move the .jpw or .tfw into the SAME folder as the raw tile (the .tif or .jpg file). Open QGIS. Add the raster layer (the .tif or .jpg file) when prompted, choose EPSG:27700 (British National Grid). Right click on the layer, and choose zoom to layer.


5

The extent of the Adress database is reported as `(-0.135610, 51.323120) - (-0.062560, 51.369150). This is surely NOT EPSG:27700 British National Grid (using meters), rather something in degrees. Ogrinfo reports EPSG:4258, which is almost identical to EPSG:4326, and looks reasonable for the given extent. Alternatively, it could be EPSG:4277 OSGB36 in ...


4

After calculating areas of the 1km grid shapefile rectangles, I can confirm that the single cells are not precisely 1km². The error is small, though. If your errors are larger, it is possible that your problem is related to a different issue (possible reprojection errors). Small errors in the source dataset Most of the calculated areas are less than 10m² off....


4

Let's stick with the UK ellipsoid + datum (to avoid datum transformation issues). You will inevitably have the "problem" is that the Ordnance Survey grids are defined on the OS projection which is a transverse Mercator projection with central longitude 2°W and central scale 0.9996012717. The scale variation over Britain is roughly 0.9996 to 1.0002 (...


4

You can manually download your Ordnance Survey Translator plugin from the repository and extract the folder to the following directory: C:\Users\(your user name)\.qgis2\python\plugins\ Restart QGIS and from the toolbar, go to Plugins > Manage and Install Plugins... Your plugin should be listed, check the box next to the plugin name to enable it.


4

Sounds like you want to label your streets layer to show the street names. You can do this by right-clicking the layer > Layer Properties > Labels, then select the attribute field which contains the names: Hope this helps!


4

MapInfo has a tool called seamless table manager, which you can load by going to the tools menu then choosing tool manager. Scroll down and tick the box to load the tool (and put one in the box to autoload it if you are likely to use it in future sessions). The tool allows you to create a single tab file to load multiple raster tiles. Open all your Street ...


4

This is a common and unfortunate problem. In QGIS install the KML Tools Plugin and see if that imports the file correctly. I've found this only works sometimes.


4

QGis is trying to be helpful by "stretching" the the "colours" of the tiles for you. The easy way around this to add all of the tiles as a single layer. This is quite easy as you can create a virtual layer so instead of this: You can go to Raster->Miscellaneous->Build Virtual Raster, unclick place each input file into a different band and select all ...


4

there seems to have been an issue with some of the attribute headers being capitals when they should be lower case. The stylesheets have been amended now for both rail and road in backdrop and full colour. https://github.com/OrdnanceSurvey/OS-VectorMap-Local-stylesheets/tree/master/Geopackage%20stylesheets/QGIS%20Stylesheets%20(QML)


3

You can find the geo referencing files on our website for each of the raster products Download TFW Here Download the correct zip file and unzip it into the same directory of your .tif files Any GIS will then work with the raster files


3

Styling OS MasterMap can be done in a number of different ways. Option 1 - use the current feature code column which only has hundred or so style rules. Option 2 - or style based on four key attributes - descriptive group, descriptive term, physical presence and make there are almost 4000 permutations. It is also dependent on what translator or loader you ...


3

The way I see it you have two main options. 1) Sign up for OS OnDemand - OS OnDemand is Ordnance Surveys WMS service. once you have access you can call it via a standard OpenLayers WMS call. This is not a free service. The licence for an external facing application is £20,000 a year. They do provide a free trial though. 2) Set up your own WMS loaded with ...


3

The Ordnance Survey TOIDS (Topological ID) are indeed unique IDs for OS features. The reason there are sometimes 13 and sometimes 16 digits after the 'osgb' bit is because they changed the specification but some data had already been released with the early 13 digit TOIDS so they were stuck with it. Many systems designed to work with OS data prepend the ...


3

IGN France has a good equivalent the Ordnance Survey MasterMap formally AddressPoint now Address Layer 2 database. http://www.ordnancesurvey.co.uk/business-and-government/products/address-layer-2.html based from many years of working very closely with OS addressing, it is in conjunction with Royal Mail (privatised in October 2013). Accuracy, it is ...


3

You can find the OS Grids here https://github.com/charlesroper/OSGB_Grids Download the shapefiles and then load them in You will probably need to adjust the styling and turn on labelling using the tile name as a text label


3

I'm not sure where you found the code epsg:4277 from but it is a representation of the OS national grid in degrees (if I'm reading the EPSG file correctly) the much more common EPSG code is EPSG:27700 which is measured in meters.


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