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Calling Map Experts......

neilyj666
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Calling Map Experts......

neilyj666
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Mentor

Can someone take a look at this http://forums.autodesk.com/t5/autocad-civil-3d-general/calling-map-experts/td-p/5440416 and advise if there is any thing that can be done with the  data?

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2025 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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antoniovinci
Advisor
Advisor

Would you please upload here those shapefiles..?

We're gonna have a look at 'em, thx.

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neilyj666
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Here's the zip - my ultimate aim is to have a series of points with a depth value at a spacing of 20-25m so I can bring it into Civil 3D as a surface for further manipulation......

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2025 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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neilyj666
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Here's the zip - my ultimate aim is to have a series of points with a depth value at a spacing of 20-25m so I can bring it into Civil 3D as a surface for further manipulation......

 

....don't know why it's double posted

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2025 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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olivier.eckmann
Advocate
Advocate
Accepted solution

Hi,

 

1. create a classical array of point covering the area with space between row and column =21

2. export to SHP

3. connect via FDO your SHP point and your Peat_data

4. FDO Overlay with copy PD_cm

5. exclude Point without information from Peat_data

6. Add calculated field to transform PD_cm to the midlle value

7. export from SDF overlayed with the calculated filed to SHP or anything Civil could use as XYZ value

 

Olivier

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neilyj666
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Thanks for this Olivier - you make it sound easy but I'm lost at step 1....

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2025 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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olivier.eckmann
Advocate
Advocate

Hi,

 

1. draw a point at coordinates X = 235841.0000     Y = 603273.0000  which correspond to X,Y min of your polygon + 3.5,3.5 offset in X et Y corresponding to hal of a "pixel" (7m*7m)

2. launch ARRAYCLASSIC  command, specify 367 rows, 244 columns, X spacing = 21, Y spacing = 21, select your point and press OK to draw the 89000 point representing a grid covering all your area

3. You can erase rapidly points which are outside of the polylgon, then lanch command MAPEXPORT, select SHP, check POINT in data type, select the layer in which you've drawn your points, and OK

 

I join the result of process.

 

Olivier

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neilyj666
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Thanks again for this - I resampled my points at 25m centres and have also done a Query > Alter Properties so that the GRIDCODE is the elevation as I was unsure how to do number 6 in your instructions - Add calculated field to transform PD_cm to the midlle value - can you explain this step please?

 

SamplePoints.jpg

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2025 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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antoniovinci
Advisor
Advisor

Here's my 2 cents, N.

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neilyj666
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Mentor

Thanks for the replies guys - the FDO Overlay Analysis was the crucial part of the equation....!!!

 

This is what I've come up with

 

2014-12-12 11_32_23-Autodesk AutoCAD Civil 3D 2015 - [Drawing7.dwg].jpg

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2025 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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olivier.eckmann
Advocate
Advocate

Hi,

 

for calculated field, it's something like that

 

( ToInt32(Substr(PD_cm, 0, Instr(PD_cm, '-') - 1)) + ToInt32(Substr(PD_cm, Instr(PD_cm, '-') + 1)) ) * 0.5

 

It's the median value between the interger before sign "-" and the integer after sign "-"

 

Just be careful with value which doesn't contains sign "-"  like 0 and 401+

 

Olivier

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Murph_Map
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@neilyj666 wrote:

Thanks for this Olivier - you make it sound easy but I'm lost at step 1....


I would do it the same way as Olivier. 

Murph
Supporting the troops daily.
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