« Inverse Colour Tables | Main | New Image Caching in Maps »

Comments

Feed You can follow this conversation by subscribing to the comment feed for this post.

A *.ply file cannot be opened in ArcMAP, Ky. However, you can convert a ply file to a shapefile. If you are a Geosoft user, draw the PLY file on a map and then export the group to a SHP file. If you are an ArcGIS user, add the PLY file as an event layer and then convert the layer to a SHP file. There is an article in ArcGIS help about how to do this: http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?TopicName=make_xy_event_layer_(data_management). You may need to edit the PLY in a text editor first so that it is readable as a table in ArcGIS.

And how can you convert a ply file to a shapefile. Can a ply file be opened in arcmap

project sounds inseretting. It seems like you need a GIS backend for querying geographic information (given current XY location, what is near me?) that can live on the robot. My personal preference would be to use PostGIS as my geographic database to store the maps or other information and then python to query it. It depends on what kind of processing power and storage space you have on the robot, but I would definitely start by looking at open source solutions. qgis is another open source GIS program which may also give you some starting points.

Thank you for the plug in. The shapefile I was trniyg to use didn't work for some reason (turns out the file contained 5 polygons). I would be glad to provide the file if you wanted to see why it wasn't working.But on a slightly different note I was hoping that you could help me in my efforts on a project I am working on for grad school. As part of my research one of my tasks is to create a piece of software that is to display a map of the surrounding area, show the current location (from a GPS), and to implement a shapefile (as a boundary outline). I am not able to really get enough information to get on the right track on how to do this, and would appreciate any assistance!The project involves a large-scale robot that will be operated by tele-communication in rough terrain. So this mapping and gps software will need to be entirely offline, but the location in use will be known. It is very preferred to find a cost effective means to doing this process (maybe even a simple API that could do the simple task, dll libraries, or active x.My initial guess is to use a geo-referenced image (that I would get the lat and long of and know the boundaries of that image). Then from a GPS I then would treat the image as an XY plot somehow and that would provide the current position. Obviously even this step can be a challenge depending on what kind of image, map, kml file, etc that I can find and use.So I would appreciate any advice, suggestions, or comments. Sincerely,John

Boy that rlelay helps me the heck out.

Your PLY file appears to be formatted correctly, and you should be able to mask a GDB containing line data. A few things to check:
- Make sure that your lines are 'selected' (they will have a small checkmark in the Line Name cell).
- You may also want to verify that the data in the GDB overlaps with the PLY and that there is not a location error. Create a new map and add a line plot, then draw the ply file on the map as well.
- Note also that when you plot your line path, you may need to fill in a value for the Break on Gap option so that the line won’t draw across the gaps in the data.

I masked the GDB by a PLY file. But unfortunately it doesn't work. Is it possible to mask line GDB?

/#CoordinateSystem="WGS 84 / UTM zone 49N"
/#Datum="WGS 84",6378137,0.0818191908426215,0
/#Projection="Transverse Mercator",0,93,0.9996,500000,0
/#Units=m,1
/#LocalDatum="WGS 84",0,0,0,0,0,0,0
poly 1
420956.5200000000 4964922.4700000000
460478.2700000000 4964557.7000000000
460251.1200000000 4927530.7500000000
420502.1700000000 4927895.4600000000

Is there anything wrong with my PLY file?

Thank you for your question. I have added some details above which I hope will answer your question and identify alternative approaches.

Importing to a Shape Database is also very handy if you have contours but would like to make a topography or DEM grid.

What s the next step to turn the gdb's into a ply.

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been saved. Comments are moderated and will not appear until approved by the author. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Comments are moderated, and will not appear until the author has approved them.

Your Information

(Name and email address are required. Email address will not be displayed with the comment.)