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MapInfo Monday: Assessing Risk with MapInfo Pro v23.2

  • 1.  MapInfo Monday: Assessing Risk with MapInfo Pro v23.2

    Employee
    Posted 7 days ago
    Edited by Peter Møller 7 days ago

    In this week's article, we will dive into a use case around the new capabilities that we added to MapInfo Pro v23.2.

    We will show how you can use the Precisely Data Integrity Spatial Analytical APIs to first find potential flood zones for an area and then, using one or more of these flood zones, analyze which buildings are in the flood zone and how much of the buildings overlap the flood zone.

    Happy #MapInfoMonday!

    Downloading the Flood Zone Data

    In MapInfo Pro, I have opened a base map in the form of Bing Aerial, which gives me a good amount of details. I have zoomed to a location near Great South Bay on Long Island, USA.

    From the Services tab, I click on the By Location control in the New Analysis Query group.

    I specify to use the Map Bounds as the input search filter, and from the tables in the Datasets list, I select flood risk.

    Below, you can see the polygons I get back. I have added a theme to the resulting dataset based on the Primary Zone column.

    Calculating Overlap between Flood Zone and Buildings

    I can now select one or more flood zones in which I want to find buildings at risk. For insurance companies, this would typically be areas where they know/can see they have active polices.

    I will select one flood zone.

    And I now create a new Overlap query to compare against my selected flood zone. I name this query Buildings Overlap Flood Zone.

    I only want to compare the flood zone to the buildings in this case. I could also have chosen to compare it to the parcels but in most cases, the buildings represent the value that has been insured

    At first, I bring back a small sample so that I can ensure that the result is what I want. When I have checked this, I will switch to All Records to bring back all overlapping buildings.
    You can see that just a few buildings are being affected by the flood zone. They are depicted as black polygons and are difficult to discern at this zoom level.

    I can zoom in to see more details, and I can turn on labels that show me how much of each building overlaps the flood zone, in percentage, as you see here, or in square meters.

    If you open the Building Overlap table in a browser, you can see all the details returned by the Overlap query: intersectionArea, percentageOfTarget, and percentageOfInput. Besides these calculated values, you also get the attributes from the buildings dataset that you specified to bring back. As I didn't change this, I got back all attribute columns.

    As you can see, you can use the Spatial Analytics APIs from the Data Integrity Suite to answer questions without having the data locally.

    This takes away the burden of downloading and preparing the full datasets whenever there is a new version available.

    This release includes access to dozens of different Precisely datasets in the US and Canada. Many more datasets and geographies are coming soon and will also be available through MapInfo Pro. You can update the datasets from the Options tab in the Precisely Data Visualizer window.


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    Peter Horsbøll Møller
    Principal Presales Consultant | Distinguished Engineer
    Precisely | Trust in Data
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