## Land Surveyor Community Forum

hi all

i just start my career in survey,

can someone help me how to adjust the coordinates station?

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#### Replies

• Hi Hank, which calculator did you download  ? the group of five or the HP 35  ?

• the hp 35

download this book and learn how to use this calculator ,I would still like you to download the five calculators that I gave you instructions to,  the 50g. and this survey software let me know if you need more help.

billy

http://support.hp.com/us-en/product/HP-35s-Scientific-Calculator/34...

After a discussion with my chief,
Those two control points were established by GPS using RTK. And I would like to correct it with the geodesic points which are located at 50 km from my working area.
How can I Process?

Thank you billy brooks, survenator and cut fill

• Hi Hank , Now I am more confused,   the key word here is adjustment.   Are you wanting to adjust or you wanting to convert  these coors. from local to geodetic.  But I am still confused if you retied them with the new system why do you need to convert them. Do you know how to translate points  from one system to the next and how to rotate them if needed ,Or you asking how to convert  three dimensional Cartesian coors, to latitude and longitude and height. I will give you a link  to chapter 5 that deals with this .

Billy

http://www.ngs.noaa.gov/PC_PROD/Inv_Fwd/invers3d.exe       this is also on the link Below.

https://www.e-education.psu.edu/natureofgeoinfo/book/export/html/1620

• hi billy,

those coor points are not local, what i need to do is to adjust it with the correct one located at 50 km from my site.

after that i will add 4 control point to have in total 6 point which gona help me to calibrate the site.

• any Cartesian coordinates can be adjusted, but unless you have specifics you can run into issues specific to adjustments outside of the basic geometry aspects of geospatial data. Projections, adjustments etc. etc.  *free *survey *software *cogo *download

you will see there is plenty of free cogo software...  I live in Minnesota, USA and I used to use MNCOGO for years... not sure if it still exist, but I'm sure there is something out there...

good luck

• HI Cut fill,  Yes i am aware of MN cogo .Also some very good complex programs for HP calculators. I featured the Mn DOT web site on HP 35s and HP 33s calculator curve programs And talk about how good the programs were and they contain more than curve programs also i have expressed how good their software page is and mention the MN Cogo32   and their other software like MN Level . I do not know if this will help Hank, I am puzzle with his ? because he talks about only two points.  I know you read the advice i gave him he has not answered me back. So  I have no way of knowing how these coors. were determine ,by TS or GPS.  Like , I  told him take care look for the reason why they are different first,  there's got to be more than two points for him to check in to. You know that there ,are a lot of things, like settings that will  affect  the out come of this coors. I have seen many times that something as simple as set to US.  feet  was changed to International feet. or vise versa  caused big problems before it was solved. WE do not have all the variables   . Like  Survenator  said, be more specific. That is the point,  I was trying  to make to Hank, thanks for your input, always.

Billy      YES  cutfill these programs are still being used.

http://www.dot.state.mn.us/surveying/toolstech/survsoft.html

MnDOT Survey Tools and Technology
The Minnesota Department of Transportation provides its home page with links to its regional offices, bid letting, construction, future highway plans…
• Thanks Mr. Brooks for the heads up on the MN Dot Cogo software...You are dead on with your comment...variables need clarifying...Also thanks for the link.
MnDOT Survey Tools and Technology
The Minnesota Department of Transportation provides its home page with links to its regional offices, bid letting, construction, future highway plans…
• Party Chief

Welcome to the community.  You'll need to be more specific.  coordinate station for what?