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olivierdalang / CadInput

CadInput QGIS plugin
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"Geographic" Angle input #7

Closed darrencope closed 9 years ago

darrencope commented 10 years ago

Hi Olivier,

It looks like this tool is replacing the Improved Polygon Capture Tool? If so, my request from that one still stands--it would be great to have the ability to enter angles in the format N45D15'30"W.

olivierdalang commented 10 years ago

Hi ! Yes it aims to replace Improved Polygon Capture.

The feature you talk about seems fine. I don't have need for it myself though and am not familiar with this format (are there standards, names, variants, etc. ?)

darrencope commented 10 years ago

Thanks Olivier,

I don't think there's a specific name or standard for this, no.

Darren Cope http://darrencope.com http://dmcope.freeshell.org

On Wed, Jan 29, 2014 at 11:03 AM, olivierdalang notifications@github.comwrote:

Hi ! Yes it aims to replace Improved Polygon Capture.

The feature you talk about seems fine. I don't have need for it myself though and am not familiar with this format (are there standards, names, variants, etc. ?)

Reply to this email directly or view it on GitHubhttps://github.com/olivierdalang/CadInput/issues/7#issuecomment-33598208 .

olivierdalang commented 10 years ago

For reference : http://plugins.qgis.org/plugins/qgsAzimuth/

Probaby a good reference on what features we need to have good geographic input !

antoniolocandro commented 10 years ago

This feature is called quadrant bearing I think

ggunngis commented 10 years ago

Yes, it is quadrant bearing and is used extensively by land surveyors. I've been in land surveying, civil engineering, mapping, GIS and Land Records for twenty something years. We use quadrant bearing for descriptions of property boundaries by metes and bounds. For example, N 30 d 25' 30" W, 215.74 ft. to an existing iron pipe; thence N 40 d 15' 45" E, 420.83 ft. to a concrete monument, etc.

All the land surveying COGO (coordinate geometry) and data collection software I've ever used, such as SMI, TDS, C&G Carlson, have quadrant bearing input as an option. CAD software such as Bentley Microstation, and Autodesk products like Land Desktop and Civil 3D have this option as well. Quadrant bearings are used far more often than azimuths in land surveying. The convention is to input the degrees, minutes, and seconds, followed by a number representing the quadrant. The quadrants are numbered in a clockwise direction - the northeast quadrant is 1, SE is 2, SW is 3 and NW is 4. The first bearing given as an example above would be input like this:

30-25-30-4

The second like this:

40-15-45-1

ArcMap's traverse tool has the quadrant bearing option as well, with one input field for the bearing. This is much more convenient for keying in a long boundary description from field notes, a survey plat, or a deed, than having separate fields for degrees, minutes, and seconds, which require one to tab through each field.

I would love to have this option in CadInput. It's essential for my work and would make a great plug-in even better! Thank you very much for providing us with such a great tool. I hope you will consider adding the quadrant bearing input as an option in a future release.