This map clearly shows there is a cluster of reported crimes within the built-up area of Guildford. The below screen shot shows all the features are in the correct location and overlay correctly.Īdd value to the data through spatial analysis The points and polygons overlay each other.Īdd a Bing background and check that the data are in the correct location.Ĭlick the map status button in the lower left corner, select map coordinates and check that the coordinates are what you would expect for the location. It is a good idea to make some checks that the layers are in the correct location, especially as this is new data from different sources and coordinate systems. This is useful if a table needs to be re-imported, for example to correct errors or if the data are changed. This feature can also be used for imperial/metric conversions. Alternatively multiply by 100 if a four-figure grid reference is used. However the data may be supplied with seven-figure references, in which case multiply the coordinates by 0.1. MapInfo uses six-figure grid references for British National Grid. This is in WGS84 coordinates but MapInfo can overlay these. However it contains longitude and latitude information. The previous table of crime incidents is currently in data only format. This is a time-saving short-cut as it saves creating a new map window then adding data to it.Ī new map window is opened for the ward boundary polygons: MapInfo gives users the choice of adding a layer to an existing map window or opening it in a new map or browser window. This table has geometry (it contains polygons) so it can be displayed in a map window. It can be opened using the following menu commands: tab format.įME Translator was previously known as Universal Translator. I will use MapInfo’s FME Quick Translator to convert them to MapInfo’s. shp (shapefile) format that is used by Esri’s ArcGIS. Import the ward boundaries and convert from a different GIS format The first row does contain column titles, so I have ticked that option. The next screen contains some options for importing. The only option for preferred view will be a browser window as this table is currently text-only and doesn’t contain any geometry. This format is commonly used to exchange data between different programs.
The data from columns are separated by columns. csv file is a Comma Separated Values file. The crime incidents spreadsheet contains longitude and latitude coordinates. Import the crime data into MapInfo and map the points They are not intended to give any opinions on crime levels or policing.
Please note that these are purely examples that I have created for this tutorial.
Alternatively you might use a similar technique to assign customers to store catchment areas. I have used similar techniques in the water industry to map complaints and assign them to distribution zones. I have used the example of crime incidents and ward boundaries because the datasets are openly available. These tutorials will count the number of crime incidents for March 2014 within set distances of the Guildford, UK town center and also group incidents by ward boundaries. Joining data based on spatial relationshipsĬounting the number of points within a buffer or polygon In this tutorial, Nick Williams, a trainer at Acuity Training, details the steps necessary to perform crime data analysis using MapInfo and data from Guildford, UK.
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