Latest Contributions by RonMan

‎10-17-2018

Are you using Mapconnect to bring into Civil 3D?

‎06-05-2018

Much appreciated Dan. Thanks, Ron

‎06-04-2018

Thank you Melita for the information. I appreciate it very much. By the way, I have watched a few of your presentation online about coordinate systems. There are all very helpful. Regards, Ron

‎06-04-2018

Is there any way i can interpolate to add intermediate points between grid of points? Just to make the ground smoother.

‎06-04-2018

Thanks Dan. It is because that is my main work / software at work for road design. It is just that the surface / profile created by this method is rough terrain. Alot of small undulations compared to lidar data or the one from the EU-DEM. For Hydrology study, this is not good terrain. I think i am missing something. Regards, Ron

‎06-03-2018

I do have a follow up question on this which is now about vertical transformation between ETRS89 and WGS84. I am using ArcMap 10.3.1 which does not have the vertical transformation. Are any of the newer versions of ArcMap supports the transformation between the two Coordinate Reference System? Is there a big difference in the elevations if i don't do any vertical transformation vs the vertically transformed elevations? Since i have 10.3 is there any other ways i can do vertical transformation? Thank you. Regards, Ron

‎06-03-2018

I would like to ask if this workflow for obtaining xyz points from raster data is acceptable. 1. Obtain SRTM data from USGS (usually 30m res.) 2. Define or Project to proper coordinate reference system and Clip to reduce the data. 3. Use the tool raster to point to create points on each center of pixels. Point features created will inherit the z value of each pixel. 4. Use the tool Export feature attributes to ASCII to export the points in csv format to have the x, y, and z. I would then use the ASCII file containing x, y and z columns in other software like Bentley InRoads to create the surface and do the triangulation in Bentley InRoads. Any comments on the workflow will be much appreciated. Regards, Ron

‎04-11-2018

Much appreciated for all of your inputs guys. They are all informative.i know that google earth elevations are with tolerances. Some i read +-15m. I hope one could verify that google earth downloaded elevations by any means is not same with the software's elevations.

‎04-11-2018

Hi Dan, yes. I always go for usgs srtm for our linear projects (hundreds of kilometers) for highways and rails. Hi Robert, Thanks for the link unfortunately our current projects are located outside US particularly African countries and Kosovo. Thanks, Ron

‎04-11-2018

Hi, Scenario is: I downloaded SRTM from USGS. Another company has downloaded elevations from Google Earth. Now there is a difference in elevations between the two terrains. Is it really possilble to download Google Earth Elevation data? Does Google earth use SRTM? I have seen videos that downloads from Google Earth but from what i experienced before is that the downloaded elevations are not the same with the Google Earth Software. Please direct me to proper community if i have posted in the wrong forum since i am unsure where to post this. Thank you. Ron

‎04-10-2018

Hi Melita, Here is the link where i got the pdf. https://www.fig.net/resources/proceedings/fig_proceedings/fig2009/papers/ts04c/ts04c_idrizi_bajrami_lubishtani_3350.pdf When i got the coordinates in WGS84 i searched for which UTM zone. Is WGS84 "GK zone 7" the same with WGS84 UTM 30N? The only Kosovo system i see in ArcMap is ETRS89. Were you able to verify my values from ArcGIS in the excel file? My differences are not the same with the differences in the original table(left). Thanks Regards, Ron

‎04-10-2018

Thank you Abdullah for the link. Thank you Melita for your valuable input and time and prompt response. I really needed an expert help on this since i do not have background on coordinate system projections. I have attached a pdf i have found online that could give additional info. I still have to digest on your response. I'll respond back as soon as my task at hand finishes. Thank you Melita. Regards, Ron

‎04-08-2018

Hi, This is a question regarding coordinate system transformation of WGS84 or latlong to KosovoRef. I am using ArcMap 10.3.1. I am given the attached excel file given the parameter as differences (-2.37349693011492 and- 1415.26511242054). I have done an excercise to test this in ArcGIS project tool using the only kosovo coordinate system available but unfortunately i am getting a difference between the excel file and the transformed coordinates. If given only parameter differences (-2.37349693011492 and- 1415.26511242054) can i input this in ArcMap to do the transformation for points and shapefiles? My aim is to have ArcGIS transform/project as per the excel file. How do i achieve this? I hope someone could spare time to help me on this. Regards, Ron UAE

‎02-21-2018

Thank you all for suggesting the different methods. All your responses are very informative. The export feature attributes to ascii was able to export successfully a csv file as big as 11 million records. Regards, Ron

‎02-20-2018

Thank Tim, I'll try it tomorrow. I'll see if I can make it work, I have not used any python tool before. I hope it is just an install.

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Latest Contributions by RonMan

Re: How do I export geoTIFF from ArcMap to use in Civil 3D?

Re: XYZ points from Raster for Triangulation

Re: Coordinate system transformation given only differences as parameters

Re: XYZ points from Raster for Triangulation

Re: XYZ points from Raster for Triangulation

Re: Coordinate system transformation given only differences as parameters

XYZ points from Raster for Triangulation

Re: Google Earth Elevations vs SRTM

Re: Google Earth Elevations vs SRTM

Google Earth Elevations vs SRTM

Re: Coordinate system transformation given only differences as parameters

Re: Coordinate system transformation given only differences as parameters

Coordinate system transformation given only differences as parameters

Re: Attribute table to CSV

Re: Attribute table to CSV

Re: Coordinate system transformation given only di...

Re: XYZ points from Raster for Triangulation

Re: Attribute table to CSV