Webinar@Lunchtime: Creating a regional Map with custom ... · 25/06/2020 · Webinar@Lunchtime:...

Webinar@LunchtimeCreating a regional Map with custom polygons in Visual Analytics on Viya

HostKarin Gross

SAS Institute GmbHManager Education

Webinar@Lunchtime

Notes:• Participants are automatically "muted”• You can raise your hand or ask a question• The event will be recorded and available with the documents on

www.sas.de/lunchtime

TeacherPaul van Mol

SAS Institute GmbHPrincipal Technical Training Consultant

Creating a regional Map with custom polygons in Visual Analytics on Viya: Applied to BelgiumPaul Van Mol

ClusteringGeographic clustering based on proximity

ClusteringOptions

Geo-EnrichmentContext Menu after geographic selection

Geo-EnrichmentBasic Panel

Geo-EnrichmentAdvanced Panel

Geo-EnrichmentResults

Geo-EnrichmentEnriching data

Geo-EnrichmentEnriching Data

Esri PortalEntering credentials

Esri PortalAdministrator settings

Custom PolygonsGeographic Variable Dialog

Who is allowed to create Custom PolygonsAdministrative Settings

Custom PolygonsCreating a new polygon provider using CAS

Custom PolygonsCreate a new polygon provider using Esri

Custom PolygonsData limitations in Report Data Service

Geographic Data Items in SAS Visual Analytics 8.5

• Geographic Data Items like countries and regions are automatically recognized and displayed in SAS Visual Analytics.

• Local regions like Districts, Municipalities are not supported by SAS Visual Analytics.

• Learn how to import a shape file and create a custom polygon provider so other VA users can draw custom regions with-in the Geomap object.

• You learn how to inspect the shape file and how to create test data to test the imported shape file. We uses an example from Belgium, but the method can easily be modified to support other geographic regions.

• https://support.sas.com/rnd/datavisualization/vageo/85/subdivs.html

Import Custom Shapefiles in SAS Visual Analytics 8.5

• Add a custom polygon provider to your Viya installation• Reduce the granularity of the shapes to improve performance (or even

make it show up inVA for large shapefiles)• Use the custom polygon provider to visualize data on a map• Identify the projection of a shapefile

The goal of this webinar

Or applied to Luxembourg

Overview

Shapefile sas dataset Load to cas Define polygon provider

Create Polygon provider

Use Polygon provider

Examining the shape file content

Shape fileOverview of content

Mandatory files•.shp — shape format; the feature geometry itself•.shx — shape index format; a positional index of the feature geometry to allow seeking forwards and backwards quickly•.dbf — attribute format; columnar attributes for each shape, in dBase IV format

Other files•.prj — projection description, using a well-known text representation of coordinate reference systems•.sbn and .sbx — a spatial index of the features•.fbn and .fbx — a spatial index of the features that are read-only•.ain and .aih — an attribute index of the active fields in a table•.ixs — a geocoding index for read-write datasets•.mxs — a geocoding index for read-write datasets (ODB format)•.atx — an attribute index for the .dbf file in the form of shapefile.columnname.atx (ArcGIS 8 and later)•.shp.xml — geospatial metadata in XML format, such as ISO 19115 or other XML schema•.cpg — used to specify the code page (only for .dbf) for identifying the character encoding to be used•.qix — an alternative quadtree spatial index used by MapServer and GDAL/OGR software

Source: https://en.wikipedia.org/wiki/Shapefile

Mapshaper.orgNice tool to verify the content of a shapefile

Qgis.org

• Tool used to change Projection and Encoding

• Can be used to combine polygons in custom regions

Step 5: Reduce the density of shape data

To speed up the rendering of shapes on maps, the density of the shapedatacan be reduced. In some instances (like the one we have), reducing the density is necessary to be able to show all shapes.

In this exercise we will use mapshaper.org to reduce the shapedata.

SAS macros to help import shape files

SAS provides two macros to help import shape files

• The %SHPCNTNT macro displays the contents of the specified shapefile. You can use the %SHPCNTNT macro to identify which variable in the shapefile should be used as an ID variable.

• The %SHPIMPRT macro converts the shapefile into a SAS data set and then loads it into CAS.

Link to documentation:https://go.documentation.sas.com/?cdcId=calcdc&cdcVersion=3.5&docsetId=caldatamgmtcas&docsetTarget=p1dwawsidsczlpn121j0glleicxp.htm&locale=en

Step 2: Import shapefile to Viya

In this step we use %SHPIMPRT to import the shapefile into a CAS dataset

Step 3: Import Accident Data

To test the imported shapefile a set of testdata with belgian Traffic Accidents is imported.https://data.gov.be/en/search/site/accidents?f%5B0%5D=ss_language%3Anl

Step 4: Create custom polygon provider

Defining a custom polygon provider based on the imported shapefile.

ReferencesDocumentation

Working with Geography Data Itemshttps://go.documentation.sas.com/?docsetId=vareportdata&docsetTarget=p031vp9uc5y5iun0zipy3c1trkqn.htm&docsetVersion=8.5&locale=nl#p1a7fw0vj2w6aln18sl77suu45o3

Loading Geographic Polygon Data as a CAS Tablehttps://go.documentation.sas.com/?docsetId=caldatamgmtcas&docsetTarget=p1dwawsidsczlpn121j0glleicxp.htm&docsetVersion=3.5&locale=nl

References

Essentials of Map Coordinate Systems and Projections in Visual Analyticshttps://blogs.sas.com/content/sgf/2019/05/21/essentials-of-map-coordinate-systems-and-projections-in-visual-analytics/Creating custom region maps with SAS Visual Analyticshttps://blogs.sas.com/content/sgf/2019/03/27/creating-custom-region-maps-with-visual-analytics/Fundamentals of SAS Visual Analytics geo mapshttps://blogs.sas.com/content/sgf/2019/02/08/fundamentals-of-sas-visual-analytics-geo-maps/Finding the Treasure: Using Geospatial Data for Better Results with SAS® Visual Analytics https://www.sas.com/content/dam/SAS/support/en/sas-global-forum-proceedings/2018/1955-2018.pdfhttps://communities.sas.com/t5/SAS-Communities-Library/How-to-create-your-first-web-map-into-a-SAS-Visual-Analytics/ta-p/522031

Questions?

Available Live Web courses

• Programming for SAS® Viya®• 13. July Live Web in English• 18. September Live Web in English

• SAS® Visual Analytics for SAS® Viya® - Fast Track• 19. – 21. August Live Web in German• 30. Sept. – 2. Oct. Live Web in German

• The Magic of Compelling Reports and Visualizations with SAS(R)• 19. November Live Web in English Language with lots of interesting sessions

about Reporting (Praxistage)

Next Webinar@Lunchtime:

Planned for early Septemberin German Language:

Statistik kann jeder(r)?!

www.sas.de/lunchtime

sas.com

Further material to download: www.sas.de/lunchtime

Webinar@Lunchtime: Creating a regional Map with custom ... · 25/06/2020 · Webinar@Lunchtime:...

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