Data Conversion
Can your data be read by me?
Can my data be read by you?
What software do you use?
Are there any standards for data conversion?
Common File Formats:
DXF AutoCAD engineering format
SDTS Standard Data Transfer System
USGS DEM Digital Elevation Model
USGS DLG Digital Line graph
ArcInfo EXPORT ArcInfo IMPORT
ArcView SHAPE files
.shp
.shx .dbf
NSDI sets standards!!!
SDTS:
Spatial Data Transfer System
All Federal agencies produce data in this format.
ArcInfo supports this standard: SDTSIMPORT
Several processes must be run before you can
run SDTSIMPORT.
winzip
Tar
SDTS2COV.aml
SDTSIMPORT
SDTS2ARC.aml
AutoCAD format (DXF)
Pretty straight forward BUT:
If the AutoCAD file is in color and layers
there may be some other files in the info
directory that need to be joined.
(X_code, A_code)
Arc:\DXFINFO = inventories the layers in the DXF file
Arc:\DXFARC = opens a dialogue to convert the layers
Adding a .DXF file to ArcView
Adding a .DXF file to ArcView
Adding a .DXF file to ArcView
USGS DEM
Digital Elevation Model:
Converts to a grid
Is converted in both ArcInfo and ArcView
DEMLATTICE
or
DEMGRID
SDTS2ARC.aml
Converting USGS DEM
Converting USGS DEM
Converting USGS DEM
Converting USGS DEM
Converting USGS DEM
Converting USGS DEM
Converting USGS DEM
ArcInfo formats
To IMPORT (To open a coverage from someone else)
a .e00 file format to a coverage, grid, or others:
IMPORT71 command
IMPORT71 Command
IMPORT71 Command
IMPORT71 Command
IMPORT71 Command
IMPORT71 Command
IMPORT71 Command
Converting Shape files
Shape files must have at least 3 different files with the
same name to make them valid.
.shp file
.shx file
.dbf file
.prj file
Converting Shape files
Converting Shape files
Converting Shape files
Converting Shape files
Converting Shape files
Other formats:
Adobe Illustrator
Postscript
RTL
PIC to DXF
www.nbmg.unr.edu
Exercise 2
All the files are located at _instruct/ftp_files
ftp the four files into your workspace and convert the first 4
of them to an Arc/Info format.
assign1_g.dem
assign1_topo.e00
counties.zip
NV_100k.DXF
Assign_g405_605.tif (Save this file for a February
digitizing assignment.)
Put the different files in an ArcView layout and print the
results of your file conversions. Remember to have your
name, date, and the exercise number in the layout.