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I have found the answer to my specific problem: To avoid the error messages I had to alter the style file to this, adding extra information to the field definitions: EXTENSION txt PROLOGUE Time Latitude Longitude Speed Direction FIELD_DELIMITER COMMA IFIELD GMT_TIME,"","%H%M%S" IFIELD LAT_NMEA, "", "%09.4f" IFIELD LON_NMEA, "", "%010.4f" IFIELD ...


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No, you need to create a new column with the right datatype and parse the data from the old column to the new column (guess your using shape files). A new column can be made with the table manager and the update with the field calculator.


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The USPS sells a full zone chart for all from-to zip combinations for $63 here: https://ribbs.usps.gov/index.cfm?page=zonecharts I sent in for one since I haven't been able to find info this anywhere else for months now.


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You do not say if you are in academia? If you are then the obvious place to go would be edina and digimap. If you are not then have a look here for free elevation data. Of cause you could go to OS the national mapping agency of the UK and get a 50m terrain model...


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There is a link you can look regarding your first question: https://geonet.esri.com/thread/45017


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Free of charge i would say: Get either ASTER or SRTM from earthexplorer. Both are available at 1 arc-sec., respectively ~20m vertical rmse.


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@Vince makes a very valid point in his comment. However here's a few ideas you could consider as a means of completing your Masters project. Meteorological station data: there is a lot of met-station data available on the web both as live RSS feeds and as historic tabular data that you could use to fake an RSS feed. Availability will depend on your ...


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I understood you want to build the shape from zero, so it means that you do not have nothing just the need: "A shape who represents a traffic lights which contains the information about time sequence". In that case is simple, just make a field survey and obtain all the points of the traffic lights. After that you need to assign to all points the information ...


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The Getting Started manual contains some links on obtaining sample data which I think are the same datasets when installing QGIS. The following is the direct link for a sample dataset: http://download.osgeo.org/qgis/data/qgis_sample_data.zip GRASS also has some datasets based in North Carolina (cannot remember if it's the same dataset): ...


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Maponics would love to supply you with the best neighborhood boundaries available. If nationwide drops of shape files are too large or beyond your budget, you can also use our API that enables you to download just what you need by attribute, geographic window or ID. In addition, we also have "Context" data that is associated with our neighborhoods, carrier ...


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If you download the shapefile you will have what is necessasry to get started. The full file (all of the world) is around 2.9GB. The each feature (protected area) has attribute information about name, protected area type (ICUN standard), country code and more. From here on you can do things two ways: Use a desktop tool to produce a kml-file which you ...


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Like Chris W mentioned, http://datagateway.nrcs.usda.gov/, is another resource option for PLSS data. IIRR NRCS pulls a copy from Geocommunicator/BLM, stores and distributes it through the datagateway. Couple things to note, on the datagateway main page, don't use the PLSS download link to the left under browse by subject. It's take you to the ...


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The state BLM office pages often have a version of the data. Colorado for example. However I've found that version may or may not match the one on Geocommunicator - as the data stewards the state version may be more up to date / recently revised (and I've seen the reverse too, where the communicator version was more recent than the state's). This page lists ...


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I can't read Chinese, so I don't know what it says there, but have you checked here? http://www.diva-gis.org/gdata


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You should check out Geonames. Get one of the country files which has different files on different themes.


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It's not clear what set of tools you're using. This approach in R might be of value though. Essentially I convert the raster cells that meet some criteria to polygons, then use overlay to subset out those lines that pass through the desired raster cells. require(sp) require(raster) require(rgeos) require(RColorBrewer) # Just for the plotting ...


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I believe this is a bug in QGIS where using the Classify option for categorised and graduated styling only outputs a single colour for joined layers (atleast for me as I use QGIS 2.6.1 and I have dozens of joined layers). A useful workaround is to use Rule-based styling as this recognises fields from joined layers and allows you to apply more advanced ...


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Note: Land COVER refers to the type of vegetation (or otherwise) covering the landscape (i.e. grassland, woodland, water or built environment). Land USE refers to how the land is used by humans (i.e. commercial, agriculture, industrial, recreational etc.) Land use and cover are quite different from the site designations listed in the first post; these ...


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I have addressed the topic in a previous question that was partially-related to this one. That being said, here are the places that I know of off the top of my head that have publicly-available parcel data in shapefile form. Through the Southern California Association of Governments (SCAG), you can obtain parcel shapefile data for Imperial, Los Angeles, ...


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I am not sure the parcels of the entire state are readily available for free. You may have to look for it on a county by county basis, which may be laborious for 58 counties. This page has a link to the GIS site for each county: http://www.coordinatedlegal.com/gis.html The State of California Geoportal website has downloadable parcels for selected ...


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Here's a fuller answer about the synthetic aperture radar (SAR) data available from the Alaska Satellite Facility at no cost to users. The datasets include Seasat (1978 data newly processed in 2013), InSAR, PALSAR (including radiometrically terrain-corrected products), RADARSAT-1, ERS-1, ERS-2, JERS-1, UAVSAR, AirMOSS, AirSAR, and more. SMAP data will ...


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what are your desired formats and resolution (temporal and spatial)? A quick search found many global products derived from MODIS, e.g.: Gross Primary Productivity 8-Day L4 Global 1km https://lpdaac.usgs.gov/products/modis_products_table/mod17a2 Terra/MODIS Net Primary Production Yearly L4 Global 1km ...


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You might be able to find them at visionofbritain.org.uk certainly if you contact them they will have those boundaries in their DB. I'm pretty sure they are publicly archived somewhere as a condition of the grant.


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Create points at the ends of road SP-322. In double type field of the points set 0 for start point and road length for end point. Use points to calibrate roads into routes Create events along the road using your table, thus record in your table SP-322, 3555 (m) will become a point 3555 m from the start of road SP-322


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Using R, you can convert between WKB and WKT using the packages rgeos and wkb. Example: # load packages library(rgeos) library(wkb) # create raw vector representing WKB geometry wkb <- as.raw(c(0x01, 0x01, 0x00, 0x00, 0x00, 0xcd, 0xcc, 0xcc, 0xcc, 0x17, 0x0d, 0x22, 0x41, 0xb8, 0x1e, 0x85, 0x9b, 0xcb, 0x40, 0x52, 0x41)) ...


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Step 3 of your list is definitely wrong in most cases. It spoils your data, because it does not change the coordinates itself, only the CRS. Instead, you have to save the data from the untouched CRS to another filename and CRS. For the Google background of the Openlayers plugin, project CRS and the CRS of the Google layer must be EPSG:3857. Other layers ...


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Well this is confusing. Try to use short names because sometimes long names might cause you problems. eg. "dem_map-AlbSRTMdem" don't use "-" in names. Try "_" and make names shorter. Perhaps that is your problem (according to what I see).



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