Global Mapper v25.0

Lidar Related Bug 02 (v15.0 b092913) Map Legend Not Always Displayed (2 out of 5)

kbellis
kbellis Global Mapper UserTrusted User
edited October 2013 in Bug Report
bug-02.png

Lidar Related Bug 02 (v15.0 b092913) Map Legend Not Always Displayed (2 out of 5)

Lidar Load Options
Load Type: Create Point Cloud
and / or Previously loaded Lidar layers
Options
Vector Options
Lidar Display
Draw Mode: Use Colors if Present (Elevations Otherwise) - Map Legend does not display
Draw Mode: Color Elevations Using Current Shader - Map Legend does not display
Draw Mode: Color by Intensity - Map Legend does not display
Draw Mode: Color by Classification - Map Legend displays okay
Draw Mode: Color by Return Number - Map Legend displays okay

NOTE: In both v14.2 and v15.0, the symbol used for the Lidar point in the Map Legend differs from that used in the actual map until user overtly reassigns symbols through the Point Styles tab.
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Lidar Related Bug 02 (v14.2 b092613) Map Legend Not Always Displayed (1 out of 5)

Lidar Load Options
Load Type: Create Point Cloud
and / or Previously loaded Lidar layers
Options
Vector Options
Lidar Display
Draw Mode: Use Colors if Present (Elevations Otherwise) - Map Legend does not display
Draw Mode: Color Elevations Using Current Shader - Map Legend does not display
Draw Mode: Color by Intensity - Map Legend does not display
Draw Mode: Color by Classification - Map Legend displays okay
Draw Mode: Color by Return Number - Map Legend does not display

NOTE: In v14.2 during Lidar Load Options, Select Lidar Point Classifications to Import
Class 1 - ,"RGB(210,210,210)", instead of Unclassified
Class 2 - ,"RGB(0,128,0)", instead of Ground

Given that this "small-stuff" issue pertains to an earlier release, it's not expected to be remedied; however, it might be helpful at some point in knowing.

Comments

  • global_mapper
    global_mapper Administrator
    edited October 2013
    I would only expect a map legend for the color by classification or color by return number options as a vector-type legend doesn't make sense for smoothly varying values like elevation or RGB color. You should get an elevation legend if coloring by elevation though and you have the elevation legend display enabled.

    The legend-by-return-color wasn't added until v15, so it won't show up in v14.2.

    Thanks,

    Mike
    Global Mapper Guru
    geohelp@bluemarblegeo.com
    Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation
  • kbellis
    kbellis Global Mapper User Trusted User
    edited October 2013
    Yes, but of course your expectations are most informed. Others may expect to see something. They not make that distinction or expect to see the gradient legend for intensity for example or something equivalent for the elevation legend (if not the actual one) when color by elevation was chosen.

    This isn't a complaint, just an observation. :)
  • kbellis
    kbellis Global Mapper User Trusted User
    edited October 2013
    Another visual dividend with such displays in a legend as LiDAR Points Colored by Elevation would be the ability to see at a glance which points were visible / filtered. The Elevation legend alone only communicates elevation and the user still would need to return to the Configuration, Lidar tab to recall what has been filtered while communicating those selected classes using some other program; e.g., Photoshop, etc.

    Againt, just an observation. :)
  • global_mapper
    global_mapper Administrator
    edited October 2013
    You would be able to see which types were filtered on the map legend if the classification colors were always shown, but that seems like it would be misleading otherwise as the colors shown would in no way reflect what is actually shown on the map since the points wouldn't be colored by classification, so the legend seems confusing in that case. Lidar is dense enough that you can almost think of it like a raster image when colored by RGB, elevation, or intensity. You wouldn't show a legend for a grayscale image since the color of the dots themselves tells you the intensity, black is just known to be less and white more.

    Thanks,

    Mike
    Global Mapper Guru
    geohelp@bluemarblegeo.com
    Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation