DÂY LƯNG & VÍ DA CHẤT LƯỢNG CAO THƯƠNG HIỆU H2


Download DNR Gramin and Use



Khi có dữ liệu trong GPS làm thế nào để trút qua máy tính một cách nhanh nhất. Ở đây xin giới thiệu DNR Gramin một phần mềm rất hữu ích và hiệu quả. Tôi đã post cả tài liệu hướng dẫn sử dụng đi kèm.

Could DNR Garmin be the Rosetta Stone of GIS Data?
It will now read from and/or save to the following file formats:
  • Shapefiles
  • ESRI File-based Geodatabase (9.2 only & only if you have it installed on your system. It apparently uses ArcObjects)
  • KML
  • GPX
  • Text files (comma or semi-colon delimited)
  • DBF

The Save As file options (I don’t have ArcGIS 9.2 installed on this computer so the Geodatabase option doesn’t show up).
In addition to saving as & reading from files, it will also read from & save directly into ArcMap or Google Earth.

A new version (5.2 beta) was released on March 12, 2007, with several new & important features. This program was already on my “Must Have” list for anyone working with GPS units. It is invaluble for the field work we do at Plateau Land & Wildlife.
Another great feature that it has but only some of us can use is the Image Hotlink/Geocode feature. This works essentially the same as GPicSync (a Google Code project). But DNR Garmin has been doing it for several years now.

This feature works based on the time stamps of your waypoints or tracks and the time stamp of your photos. It can automatically calculate an offset if your clocks aren’t syncronized.
Notice the “Project and Unproject Coordinates” menu items above. The software uses the Proj.4 projection libary to allow reprojection into a vast array of coordinate systems & datums very rapidly.
I’m fairly certian that you could use the libaries used by this program to make a utility that worked with any and all attributes included in your data rather than just the GPS centric fields that this works with by default. To be fair, though if you have some standard attributes, you can cutomize the fields for waypoints, tracks, routes, and real-time data to include whatever fields you want.
Update – Price for all of this : Free
I’m sure you can think of plenty of innovative ways to use this software but let me share an example with you.
As I’ve posted about before we do a lot of bird surveys in the spring. Many of these are done by sub-contractors who don’t have access to a GIS system. Let’s say we have a new client for whom we have never done a survey before. We send the sub-contractor a shapefile of the client property. She then uses DNR Garmin to convert that shapefile directly into KML & into her Google Earth My Places file. She opens up GE & there the property is with aerial photo, roads, & elevation. She adds placemarks for each of the proposed survey stations which she picks based on the info visible in GE. If she wants to colaborate with the biologist familar with the property they can easily share the info to each other. Then she opens DNR Garmin, loads those placemarks directly from GE to her GPS unit. Gets driving directions from her house to the client property through GE and goes and does the survey. If we wanted her to, she could send us back a shapefile of the census stations by saving the actual station locations from her GPS unit into a shapefile via DNR Garmin.


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