No points were found in the file

[ajr0]

Hi there

When trying to create a toposurface in Revit and importing a points file with a txt file, an error message comes up "No points found in the file" and "Some rows from the file could not be used."

Any advice on what to do here?

I have attached both the dwg and txt file.

Thanks

[ToanDN]

Your txt file format isn't correct as there isn't a column for elevation values.  Creating the topo from the CAD file got me a completely flat topo as the CAD file also contain no elevation values.  

Where did you get the files from?

[ajr0]

Thanks - appreciate your response. I'm still new to topography on Revit. 

Both the dwg and txt file came from the surveyor so assume I should ask him to include the elevation values. Is that all I need to ask them? 

[ToanDN]

Let's try that.

[MostafaElashmawy]

To make a Topo from Survey data in Revit you have two options:

1- using contours from CAD file, in that case you will need the contour lines drawn in cad with correct elevations:

a) insert the cad file to Revit.

b) While in the Topo command, select create from import >> Select import instance then select your inserted cad file then check only the layer having contour.

However, this case will not work for you because all your contours are drawn on CAD at 0 elevation.

2- using point file, the point file should be excel CSV file with 3 columns only : X, Y & Z

Sometimes we can edit the text file in excel and make it workable, but your text file can't be utilized in this case because it don't have Z values (Elevation). 

attached an example for your survey team to follow.

[barthbradley]

You can get there with what you've got. All the information is right there in your CAD file. Just convert all the contours to Polylines and give them the elevation listed.  You can then insert CAD into Revit and create a Toposurface from Import Instance.  

[ajr0]

Sorry for the delay. I have the points file attached, but for some reason the surface looks odd on my end. 

Hoping it is just a user error now? 

[barthbradley]

Did you happen to look at the csv file you are posting here?

The file must contain x, y, and z coordinate numbers as the first numeric values in the file.  

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2016/EN...

[ajr0]

Yes - this is all the surveyor will give me so thought I would try see if it's any use.

I will try it the way you suggested in your first comment - I've used Revit for years but never had to work with a toposurface till now so am really struggling (I don't use Autocad either)! Thanks

[barthbradley · Accepted solution]

Your surveyor sounds like a jerk.  When you give him his paycheck, make sure to leave off all of the numbers to left of the decimal point.  i.e. $    .01  

[ToanDN]

Is it a valley?  If so, try this.  There are some sticking points which are odds but you can fix them manually in the text file using common sense.

[barthbradley]

@ajr0: see attached. This is the work product behind the screenshot I post a week ago. Like I said then -- you have all you need in the DWG.  You don't need no stinkin' surveyor or his CSV file.  

[constantin.stroescu]

There a few problems with your files:

• the CAD file :
  • Layer : _CONTOUR . The lines from this layer have no Z value other then 0.00. That implies that these lines can not be used in Revit as imported : Toposurface >Create from Import >Select Import Instance.
  • The Points and the Block Reference (Layer: SPOT) have ,also, no other value then 0.00. More than that, the X and Y coordinates of these points do not match the value from your .csv file. It looks that the CAD drawing was moved from its original position ( have a look to the attached screenshot)
  • These means that the CAD file as it is now can not be used as imported into Revit , to create a Toposurface. In order to be able to do it you'll have either to :
    • move every line from layer _CONTOUR to the appropriate height ( Z value) - I see no indication (Label Contours in Revit ) of this value on CAD drawing. 
    • or, to make an Extraction of points (blocks) in a Table and then saved in a .csv file. BUT NO! THIS CAN'T BE DONE! in your case because as seen in above the points(blocks) have no Z value ( they are all even at 0.00).
• the .csv file , as shown above has other X,Y values then the X,Y of the CAD file's points (Blocks) from layer: SPOT. More then that there is no Z column. The .csv file , in order to be accepted into Revit : Toposurface>Create from Import>Specify Points File has to have ONLY three columns of values for X, Y and Z and nothing else...
• My advice is that you have to ask the survey engineer to give you :
  • the .dwg file with the correct position: X,Y and Z for the Points and for the Contours
    
    • or/and:
  • the .csv file that contains the X,Y, Z columns

[barthbradley]

---

@constantin.stroescu wrote:

• • • I see no indication (Label Contours in Revit ) of this value on CAD drawing. 

---

The 2D contour lines' elevations are labeled in the DWG, so they can be accurately elevated after converting them to Polylines.  Once elevated and saved, the DWG can be inserted in Revit via Insert=>Import CAD and used as an Import Instance to create a Revit Toposurface.  

[constantin.stroescu]

sorry!....I simply didn't notice the height labels....I'm accustomed with labels placed in the mid of the isolines not at the start/end position.....All you remarks are correct!

[ajr0]

Thank you - am now sorted thanks to the files you provided... I also know what I need now for next time - or what to tell the surveyor to give me!

Cheers everyone else too for your comments and advice - much appreciated.