====== Measurements on Oblique Views ======

This page describes the Orbit desktop "Oblique View Measure" window and how to perform an oblique measurement. \\
For Orbit's generic 3D Measure capabilities, see [[112:orbit_desktop:map:3d_measurements|]].

{{orbit_desktop:how_to_find.png?25&nolink |}}  Tabs >  Oblique > [[112:mobile_mapping:desktop:core:use:toolbars|1st View Sidebar]] > Measure icon

{{ oblique_mapping:desktop:core:use:obliq.png|}}

===== Measure Mode =====

** Measure in 1 Oblique ** \** Use DEM**\\
Mobile mapping measurements can be done with a single click using a DTM or via triangulation using two images. \\
Indicate the desired measure mode via the "Measure in 1 Oblique" checkbox  to use DTM (checked) or to measure via triangulation in 2 views (unchecked). \\
Information about the measure techniques and point cloud hover settings : 
  * [[112:oblique_mapping:desktop:core:use:measure_dtm|]]
  * [[112:oblique_mapping:desktop:core:use:measure_triangulation|]]

A DTM resource must be available for at least one of the currently opened views to enable the option "Measure in 1 Oblique". If there is no DTM available for any of the opened views, this checkbox will be disabled. 

===== Measure Functions =====

Here solely the dedicated Oblique measure functions are explained. For Orbit's generic 3D Measure capabilities, see [[112:orbit_desktop:map:3d_measurements|]].

=== Distance ===

{{oblique_mapping:desktop:core:use:mmpano_measure_distance_horizontal.png|}} **Distance Horizontal measurement** \\
Distance measurement, straight line between 2 coordinates. \\
How to measure : measure 2 coordinates. \\
Results : xy distance between measured points.

{{oblique_mapping:desktop:core:use:mmpano_measure_distance_vertical.png|}} **Distance Vertical measurement with first measurement on the ground** \\
Distance measurement, straight line between 2 coordinates. \\
How to measure : measure 2 coordinates, the first one on the ground. \\
Results : z distance between measured points.

=== Area ===

{{mobile_mapping:desktop:core:use:mmpano_measure_area_3points_vertical.png?nolink|}} **Vertical rectangular area with ground ** \\ 
Vertical rectangular area measurement defined by 3 coordinates. \\
How to measure : (1) measure one side on ground, as distance, (2) measure any point on the opposite side. \\ 
Results : xyz area. 

 {{:oblique_mapping:desktop:core:use:mmpano_measure_area_horizontal_from_ground_rect_-_copy_-_copy.png|}}**Horizontal rectangular area with ground** \\ 
Horizontal rectangular area measurement defined by 4 coordinates. \\
How to measure : (1) measure one point on ground, as distance, (2) measure one side at the desired height, as distance, (3) measure any point on the opposite side. \\ 
Results : xyz area, distance Z

{{oblique_mapping:desktop:core:use:mmpano_measure_area_horizontal_from_ground_free.png|}} **Free horizontal area with ground** \\ 
Vertical rectangular area measurement defined by 3 coordinates. \\
How to measure : (1) measure one point on the ground(2) measure sequence of coordinates at the desired height, (3) stop \\
Results : xyz area, distance Z
===== Measure results =====

See Map 3D Measurements

===== How to measure =====
See Map 3D Measurements

===== Extract features =====

Using the measure window any measurement can be copied to the recorded dataset using the "Copy to feature" button. \\

    * A measurment can only be copied to a dataset model of the same spatial component (points, polylines, areas). \\ 
    * The CRS of the recorded datasets needs to be defined to perform the reprojection of the measurement to the dataset : \\ [[112:technologies:crs:crs_orbit|]] > Dataset CRS
    * Depending the dataset structure of the recorded dataset 2D or 3D objects will be created : \\ [[112:orbit_desktop:datasets:contents:index]] > Structure > Manage Models in Dataset > Coordinate 

Also, the results of one measurement can be copied to clipboard using the omonime function.