• Geodesic Lines Along a Surface

    I'm working on creating a large number of flight routes, constrained by ETOPS. I've been using the Cost Connectivity tool using costs rasters that represent the ETOPS constraints. I then run the resulting routes throu...
    last modified by drewgis
  • How do I get meridians, paralells and grids to appear at perfect right angles in UTM?

    I am trying to produce some trail maps in UTM Zone 11 North, which is standard for my region. When I look at examples of other trail maps produced in this projection, the meridians, parallels and UTM grids are all per...
    last modified by be5m1th
  • Modify Projection for east west area

    I have an area I would like to map. The extent of the area is approximately: -147 to -141 and 69.5 N to 70.5 N (North East Alaska). It falls right between two state plane zones and also between two UTM zones. For now,...
    last modified by fallingdog
  • Line data offset on one computer but not another, why?

    Hi all,   So today we are experiencing an interesting anomaly that I have never come across before.  Our Engineering Department has a standard map that they access for viewing various utility and road syste...
    last modified by Tville_GIS
  • Arc GIS Pro Projection not working?

    This is going to sound pretty basic but when I change the projection  of my shape file ( WGS 1984 Web Mercator Auxiliary Sphere to USA_Contiguous_Lambert_Conformal_Conic) it says the Projection is completed succe...
    last modified by abiles_UMW
  • Feature Projection error

    I have 2 shapefiles from a few years ago that I did not author. One is in NAD27 UTM 10, the other is in NAD83 UTM 10. . There was a map request that includes this data. We have a standard practice of using NAD83 ...
    last modified by faithgreycloud
  • How do I know which PCS is most appropriate to project to?

    Hello!   I have a list of shapefiles that I am trying to merge together to create one larger shapefile. The issue here is that these shapefiles have different coordinate systems. The list below identifies all th...
    last modified by mctraverso
  • Lambert Conical Orthomorphic

    I am trying to digitize an old map. The projection is Lambert Conical Orthomorphic, It is a southern hemisphere map I  georeference the map (it is a scanned image, I've tried various projections) it appears...
    last modified by 19499787
  • Do all your shapefiles have to be a projected coordinate system in order to calculate geometry?

    Hi,   I am trying to calculate burn area of brazil using MODIS burn area product shapefiles for northern and central South America. These were monthly shapfiles from April - Decemeber of 2015. The goal...
    last modified by mctraverso
  • Longitude is 180 degrees off

    Hi Everyone,   I am working with NASA data in ArcGIS and am having a problem with displaying the longitude correctly. I have attached a screenshot, unfortunately the file is too large. This file should be over J...
    last modified by pmoth
  • What is the extent to which projected coordinate systems conserve the shape, area and the distance?

    The extent to which the PCS conserve the original  shape (ii) area and (iii)distance.
    last modified by lawekush
  • does arcgis webtiledlayer support- EPSG:3414?

    Hi Geeks!   I have been trying to solve this issue in application for arcgis webtiledlayer to display 3rd pary tile map service (TMS) in EPSG:3414 projection [Projected Coordinate Systems]. More info >>...
    last modified by mightymike1
  • add an existing projection to the drop down list

    I am embarking on a new project that is located in Finland and the data in the project folder are projected in Finnish KKJ_Zone 4 [EPSG2394]. The Arc dropdown box lists two projections for Finland under Projected Coo...
  • Projecting Vectors in LO19 projection to MODIS sinusoidal Projection

    Hi Everyone   I have a case where I have vector data (crop census polygons) in a LO19_South Africa Projected Coordinate System with a Geographic Coordinate Sytem of Hartebeesthoek_1994. I then added MODIS LST da...
    last modified by 15124193
  • Clip tool(annotation) while projection transformation

    Hi python snippets arcgis map clip_analysis tool is not working properly for Annotation layer provided the output in another projection system. Anyone else encountered this.   To recreate the issue: ...
    created by mailsivaprakash
  • help importing coordinates

    Hi All,   I am struggling with something related to coordinates;   I have been given some coordinates for a cable: they are in excel but I had to modify a bit it as it was with blanks rows and things like ...
    last modified by FRANESCARUSSO22
  • Transformations between various NAD83 and WGS84 realizations

    I realize there are already many questions and answers out there related to this issue.  However, I continue having a difficult time pinpointing exactly which transformations I should use.   ...
    created by henrymogs
  • What is the best way to re-project NAD83(86) to NAD83(2011) without changing the x y coordinates?

    What is the best way to re-project NAD83(86) to NAD83(2011) without changing the x y coordinates?  We have a been processing survey data for the last few years from text files that are referenced to HARN, CORS96,...
    last modified by yeoanny
  • Projections problem

    Hi! I'm a new user of arcgis I downloaded vector data layers from one website and got an .tsv document that includes coordinates. That's going to be my map. I put the vector layers on new map and also .tsv positions. ...
    last modified by mishafljin
  • Am I misusing geodesic line length?

    All, Generally I work on data in the UK but am currently working on a project processing data for the whole of Latin America, so every country South of Mexico all the way to Argentina.   I am doing a load of ne...
    last modified by Hornbydd