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Digital
Mapping for
Business
& Government
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7.5
Minute Quadrangle Names
Don't know the quadrangle name(s) for your area of study? Go
to this link to conduct a graphic-based search for 7.5 Minute
DEMs (1:24,000 scale). |
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15
Minute Quadrangle Names
Don't know the quadrangle name(s) for your area of study? Go
to this link to conduct a graphic-based search for 15 Mminute
DEMs (1:250,000 scale). |
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USGS
- 15 Minute DEMs
Download site for 15 Minute DEMs (organized by state). |
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Free
GIS Data from GeoCommunity's GIS Data Depot
Includes DEMs, DRGs, other misc. files on a state-by-state
basis. Fees for some datasets. |
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Free
GIS Data from Directions Magazine
includes geographic datasets, industry data (telco, health, etc.),
demographics and more. User contributions. |
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Free
GIS Tools from Directions Magazine
Includes tools, applications, symbols and more. User
contributions. |
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We've established the Help
Kiosk as a collection of useful tips, links and
downloads geared towards the GIS Industry, and
specifically, MapInfo users. If you would like to
share your helpful hints with others, please feel free
to contact TerraNOVA and we'll post it here.
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Free Downloads
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| Filename |
Description |
| sdts2dem.exe
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Utility used to convert government standard sdts
(spatial data transfer standard) file format to
DEM files. |
| VH-Translator.mbx
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Utility to convert V&H coordinates to Longitude
and Latitude and vice versa. |
| import-xls.pdf |
"How-to" document covering importing
Microsoft® Excel spreadsheets into MapInfo
Professional. |
| layernames.pdf |
Descriptions
and naming conventions for the different layers
that are shipped with either MapInfo®
StreetPro™ or GDT Dynamap/2000®. |
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Tips
& Tricks |
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Want
to add latitude
and longitude columns
to an existing
points table? Here's how:
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One
Add two new columns to your
table (Table> Maintenance> Table Structure). Name
them lat and lon and make them type = float.
Two
Update both columns with
centroid information for each row in the table
(Table> Update Column> select column Lat). Get
value from same table you're updating. Update with value
CentroidY(obj). Repeat for column Lon. Update with value
CentroidX(obj).
Three
Save your table. You're
finished! |
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Remember:
Latitude = Y Coordinate
Longitude = X Coordinate |
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