Messages

1

General / Re: Help with .prj file

« on: December 12, 2018, 02:07:51 PM »

Updated to more Closely Match Trimble Site Calibration



PROJCS["RED DOG MINE",GEOGCS[""GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",68.064457303],PARAMETER["Central_Meridian",-162.834299883],PARAMETER["scale_factor",1.0000],PARAMETER["false_easting",586270.569],PARAMETER["false_northing",142169.282],UNIT["Foot_US",0.30480060960121924]]


Im bumbling through this slowly but surely.... I hope its not a blunder that I listed the Semi Major Axis of the spheroid in meters as opposed to feet.

Since WGS_1984 is a standard perhaps it is looking for it that way. However I did not put an authority tag on it so im not sure.

2

General / Re: Help wit .prj file

« on: December 11, 2018, 04:49:38 PM »

Ok I am bumping this Post again...... Here is the History of the projection I am fooling with. This Projection Started out as NAD27 ALASKA Zone 7 as obviously it predates 1983. Unfortunately This local system predates GPS Therefore This local Coordinate System I am working with is very similar to NAD27 but it missed the mark there by a bit as well... Im assuming this is because over the years error has been induced to the network ... For All I know the original survey was wrong...

Regardless What im trying to do is create a .prj file as close as i can to a site calibration that was done with my Trimble GPS.... The Parameters I posted above is what im shooting far.

This is my first attempt..... Any advice is appreciated. 

PROJCS["RED DOG MINE",GEOGCS["GCS_North_American_1927",DATUM["D_North_American_1927",SPHEROID["Clarke_1866",6378206.4,294.9786982]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",68.064457303],PARAMETER["Central_Meridian",-162.834299883],PARAMETER["scale_factor",1.0000],PARAMETER["false_easting",586270.569],PARAMETER["false_northing",142169.282],UNIT["Foot_US",0.30480060960121924]]

3

General / Re: Help wit .prj file

« on: December 10, 2018, 02:47:58 AM »

I am just trying to give this post a bump...... I know that there are a lot of gurus in here that can help me turn those parameters into a .prj. 

4

General / Help wit .prj file

« on: December 03, 2018, 11:10:16 PM »

I am trying to create a Local projection in US Survey Feet.

I have pulled out the parameters from Trimble Buisness Center ...


Coordinate System Definition



Projection:

Plane


Origin latitude:  N68°03'52.04629"
Origin longitude:  W162°50'03.47958"
False northing:  142169.282 ft
False easting:  586270.569 ft
Scale factor:  1.0000000000
Parallel 1:  ?
Parallel 2:  ?
Shift grid name:  None


Azimuth:


System:  North
Coordinate direction:  North-East


Datum Transformation (To WGS84):


Method:  None
Translation X:  ?
Translation Y:  ?
Translation Z:  ?
Rotation X:  ?
Rotation Y:  ?
Rotation Z:  ?
Scale factor:  ?
Ellipsoid:  World Geodetic System 1984
Semi major axis:  20925604.474 ft
Flattening:  1 / 298.2572229329
Datum grid name:  None
Latitude grid file name:  None
Longitude grid file name:  None
Height grid file name:  None


Local site settings:


Project latitude:  ?
Project longitude:  ?
Project height:  0.000 ft
Ground scale factor:  1.0000000000
False northing offset:  0.000 ft
False easting offset:  0.000 ft


Geoid Model:


Name:  None
File:  None



Horizontal Site Calibration:


Translation north:  58.703 ft
Translation east:  -47.026 ft
Rotation:  0°46'36"
Origin north:  138673.296 ft
Origin east:  581961.364 ft
Scale factor:  1.0000000000


Vertical Site Calibration:


Shift at origin:  -0.063 ft
Slope North:  2.146 ppm
Slope East:  1.866 ppm
Origin north:  142169.253 ft
Origin east:  586270.535 ft


GNSS Vector Transformation Parameters:


Latitude deflection:  N0°00'00.00000"
Longitude deflection:  E0°00'00.00000"
Azimuth rotation:  0°00'00"
Scale factor:  1.0000000000


I have no experiance with creating a .prj so if you guys can help I would greatly appreciate it.

Pat

5

General / Re: Imperial Measurements

« on: March 09, 2016, 10:05:13 AM »

Thank you Alexy.....

I have the .prj file updated and now everything is running smooth

6

Feature Requests / IMPERIAL Measurements

« on: March 07, 2016, 08:35:33 AM »

Please add support for imperial Units...

7

General / Imperial Measurements

« on: March 07, 2016, 05:42:16 AM »

Hi guys

I am wanting to use a custom .prj file

This .prj file is based in feet and State plane coordinates.  I notice when I choose the .prj file and upload it In the reference Pane the Tabs change from Lat and Long to north and East Tabs.... thats perfect

However on the reference tabs it  reads as Northing(m)  Easting(m) Altitude (m)

This makes me think that photoscan is not recognizing the fact the .prj file is in feet. Is there anyway to confirm that photoscan is actually in feet as opposed to meters.

is it possible to measure in imperial units as opposed to metric?

any help is appreciated. 

8

General / Re: PRJ File

« on: March 07, 2016, 03:22:33 AM »

I am having the same trouble here. I'm trying to upload some .prj files for use with Alaska State Plane  and
 Agisoft will not open them.
I really need this to work so any suggestions are much appreciated