LISP for Northing/Easting Comparison

[jhill]

Hello,

I was wondering if someone had a LISP to do a comparison between a design point and a measured point.  We are hoping to do something similar to the attached.  What we would like to be able to do:

1. Click a cogo point, CAD snap, block insert, etc.

2. Click another cogo point, CAD snap, block insert, etc.

3. Have the text produced with a difference in the northing & easting between the two based upon the UCS.

In the attached example, the 20000's are the calcs and the 10000's are the field measurements.

It seems Sincpac has something similar w/ PTCompare (  http://info.quuxsoft.com/SincpacC3D_Help/SP_PointsCompare.htm ) as do many survey data collectors, but those produce a csv or html file listing the differences.  We would like to easily make what we call a "calc sheet" that we give to our PLS so he can see how we "rubber banded" the found monuments to the plan on record.

Thanks,

J

[TerryDotson · Accepted solution]

DotSoft's C4DTools contains an automated point compare that finds all instances that are within a specified distance and generates a detailed report.  Just a matter of a quick revision to add labels, take about 15min.

[jhill]

Hi Terry.  Thanks for the response.  Is there any easy way to place the delta's in the CAD at the actual point of comparison?  DotSoft seems to work as long as there is a calc cogo point and a measured cogo point (we have your Civil3d Tools and we just verified such).  We can copy/paste the text from the individual cells in the inserted CAD excel sheet, but it would be nice to have the ability to have it just appear at the comparison point.

A LISP of sorts allowing individual comparisons would still be awesome (ie. pick one point/entity and compare it to another individual point/entity).  The main reason for that is we are in the habit of just staking the CAD; we do not always create calc points.

Regards,

J

[TerryDotson]

> ... (we have your Civil3d Tools and we just verified such).  We can copy/paste the text from the individual cells in the inserted CAD excel sheet, but it would be nice to have the ability to have it just appear at the comparison point.

@jhill Currently working on adding a button to the dialog that would add labels to the results automatically so it's just a single click operation.  The biggest question right now is what kind of geometry to add (an insert, a dimension, Aecc label?)  The current thought is an insert with two attributes that would allow easy movement if needed.  Looks like if either delta is 0.00 it should skip the label.

Next thought is a delete old toggle (adjacent toggle button) that would delete the old labels automatically if the process were done twice in the same drawing.

So, we're almost there, just a matter of what to draw.  Feel free to email me at dotson (at) dotsoft (dot) com.

[jhill]

A quick ask around the office has us agreeing w/ both of your thoughts.  The ability to choose individuals points/entities would be gravy, but we will await the update.

Thanks again,

J

[TerryDotson]

The ability to choose individuals points/entities would be gravy ...

---

The [<] button to the right of the [Point Group] lets you choose CogoPoints in the drawing without having to create a formal group to process.  Will email you when the first revision is working and we can refine from that.  Best to continue via email from here on.

[fscottFG83A]

I am not familiar with this add-on. I was in the process of getting help creating a lisp that visually does what you are describing with the potential to align a polygon like a plat or deed with each found control to align through and see what is the best fit. Does your software do that? I have attached the lisp. Lee Minardi wrote it and I tweeked it a little.

[jhill]

Hi fscottGF83A,

I will let Terry answer the specifics; however, we have used it for point comparison with great success and are very satisfied with the addon.

I have done something similar to what you are looking to do a few ways and offer these in addition to whatever Terry replies with.

SurvPC:

Request a demo from a dealer.

https://www.carlsonsw.com/product/carlson-survce

You can import your field points up to a maximum of 10 or 15 in demo mode.  Then import your CAD drawn up plat.  Use the COGO->Transform->Points routine to map the plat to the shot monuments

p.398-400

http://survce.com/SurvCE%206.0%20User%20Manual.pdf

Match your shot points to your CAD.  It will do a best fit and give the differences to the northing and eastings.  Unfortunately, in the simulator, you just have to screenshot the results as you cannot save a txt report.  The Equip->Localization only seems to work if you have a shot in the field RW5/CRD file.

I imagine the Microsurvey FieldGenius, Leica Captivate, or Trimble Access demos have something similar.  The problem with them is that (when using the free demos):

-you are point # limited

-the points are either "on" or "off" in the weighting

-they are data collector software and not really meant for this in an office setting (ie. kinda kludgy).

Primacode's Transform

https://www.primacode.com/transform.htm

https://amerisurv.com/2006/06/30/software-review-transform-for-windows/

It costs more, but it does more.  It allows you to "weight" each point (ie. you would give a higher priority to an old cut stone vs a recently set pin found in a muddy swamp) when it does its comparison.

Triad

https://www.mcgee-gps-triad.com/win_triad_main_new.htm

Similar to Transform, but not quite as feature laden.

Carlson Survey -> Deed Correlation command

I doubt you would have this if you have AutoCAD; however, it is another option.

https://files.carlsonsw.com/mirror/manuals/Carlson_2017/source/Survey/Survey/Deed_Correlation/Deed_C...

All of them have pro's and con's along w/ varying price marks.  They all suffer from the fact that they are an additional piece of software.

Please keep in mind that these pieces of software are, per most PLS's advice, best used to find field blunders and not to try and "rubberband" boundaries.

[fscottFG83A]

Thank you very much. I will look into these options.