Automatically calculate plot dia after slope angle

Good day. I'm trying to set up a field in the survey form designer, that will automatically calculate corrected plot radius for the survey team in field, after the slope angle has been determined and entered into the appropriate field. Is this possible and how do I go about it?

plot_radius / Math.sqrt(Math.cos(slope_angle * Math.PI / 180))

arena

asked 18 hours ago

Ten Trees Sq...
11●1
accept rate: 0%

One Answer:

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Dear user,
If your survey has an attribute with the plot radius called "plot_radius" and another one with the slope angle (in degrees) called "slope_angle", the expression you typed will work as it is.
Create a new read-only attribute, called for example "plot_radius_adjusted" and use that expression as a default value expression (define it using the "Advanced" expression editor), following these steps:

Create a new decimal attribute and mark it as read-only:

alt text

In the expression editor that appears, click on the "Advanced" button on the top right corner:

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Copy and paste the expression in the text input:

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Apply the changes and if the expression is correct, the result should be this one:

alt text

Many thanks,
Open Foris Team

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answered 17 hours ago

Stefano (OF) ♦♦
5.4k●1●1●9
accept rate: 18%

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arena ×114

question asked: 18 hours ago

question was seen: 12 times

last updated: 17 hours ago

Automatically calculate plot dia after slope angle

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