Basic Analysis and Graphing - SAS

416 Creating Maps Chapter 16
Example of Creating A Map in Graph Builder
For numeric columns, the Format Menu appears in the Column Info window. Specify the format to tell
JMP how to display numbers in the column. Latitude and Longitude for geographic maps are located under
Format > Geographic when customizing axes and axes labels.
Geographic Shows latitude and longitude number formatting for geographic maps. Latitude and
longitude options include the following:
– DDD (degrees)
– DMM (degrees and minutes)
– DMS (degrees, minutes, and seconds)
In each format, the last field can have a fraction part. You can specify the direction with either a signed
degree field or a direction suffix. To show a signed degree field, such as -59°00'00", deselect Direction
Indicator. To show the direction suffix, such as 59°00'00" S, select Direction Indicator.
To use spaces as field separators, deselect Field Punctuation. To use degrees, minutes, and seconds
symbols, select Field Punctuation.
ESRI ® Shapefiles
The ESRI Shapefile (shapefile) is a geospatial vector data format for geographic information systems
software. It is developed and regulated by ESRI as a specification among ESRI and other software products.
Shapefiles spatially describe geometries (points, polylines, and polygons) that could represent data such as
streams, rivers, and lakes. Shapefile is the standard for map data, and each map is actually a set of files with
the same name and different extensions. JMP imports two of them:
• a main file (.shp)
• a dBase table (.dbf)
The main file contains sequences of points that make up polygons. When opened with JMP, a .shp file is
imported as a JMP table which contains a Shape column to uniquely identify each geographic region, a Part
column to indicate discontiguous regions, and the XY coordinates (in latitude and longitude degrees). The
Shape column is added during import. You can add formatting and axis settings for the X and Y columns.
The dBase table should have an ID column that maps to the Shape column in the main file, plus any
number of columns that provide common names or values to refer to the regions. Add the ID column
manually after import.
Opening an .shp or a .dbf file in JMP opens the data as a JMP data table. For an .shp file, each coordinate
point is a separate row. JMP only supports two-dimensional .shp files (no elevation information).
Shapefiles store geometrical data types such as points, lines, and polygons. But such data is of limited use
without attributes to specify what they represent. Therefore, a table of records stores information for each
shape in the shapefile. Shapes, combined with data attributes, create depictions about geographical data that
can lead to effective evaluations.
To convert an ESRI shapefile to a JMP map file:
1. Open the .shp file in JMP.