Can I use a .tin from microstation and create a terrain in the mapper?

[lkhoury]

I have a .tin file that I exported all my cross sections from. I just want to use it as a terrain in the mapper. Also, I have a raster that I tried to use but it keeps switching elevations to metric or something else. My elevations should be in the 600-7-00 range but I’m getting 35-250 range. I made sure the projection is correct but I just cant get it right! here is what I am talking about.

[Lonnie A]

You have to convert the tin to a raster prior to importing it into RAS. Not sure on the elevation issue. In the main window of RAS under options it isn’t set to metric by chance is it? I don’t believe that would be the cause, more likely a issue with the raster/projection.

[Anonymous]

I checked it’s not meters. The top is extracted from microstation tin and the bottom is the terrain plot. My guess is the terrain is wrong or when I converted it, it became somehow in meters… I’ll see if microstation has a way to convert tin to raster
Thanks

[lkhoury]

I figured it out. If anyone encounters the same problem, please let me know and I will be happy to walk you through it.

[Anonymous]

I was curious your method of converting your .tin into a raster format for HECRAS. I typically convert the .tin to landxml in Microstation. Than in GIS Create a TIN based upon the landxml. From there I’m able to convert to raster. Only issue i have is the grid size for the raster won’t let me change it to something with a better resolution. It defaults to a value.

[lkhoury]

That’s exactly what I did.. I have a good surface on the project I am working with but I will keep an eye on the resolution and will let you know if I find something new. Thanks for sharing

[lkhoury]

When you convert from tin to raster using Arc conversion tool, there is a sampling distance (optional) in the conversion window. You can pick the sampling size there. My other guess for a low resolution of raster is that the tin itself has big intervals.
Hope that helps..

[[email protected]]

hi lkhoury,

I do facing same problem, I have tin file from microstation/geopak, want to make a terrain in Ras mapper, can u guide me step by step, will appreciates. I have access to QGIS.
Thanks

[lkhoury]

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Date: Fri, 2 Nov 2018 20:35:21 -0500
Subject: Re: Can I use a .tin from microstation and create a terrain in the mapper?
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References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>
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Hi!=20
The method I know requires 3D analyst tool. If you don=E2=80=99t have licens=
e for that then I=E2=80=99m afraid I can=E2=80=99t help you.
Good luck!=20

Sent from my iPhone

> On Nov 2, 2018, at 11:46 AM, [email protected] [via HEC-RAS Help] wrote:
>=20
> hi lkhoury,=20
>=20
> I do facing same problem, I have tin file from microstation/geopak, want t=
o make a terrain in Ras mapper, can u guide me step by step, will appreciate=
s. I have access to QGIS.=20
> Thanks=20
>=20
> If you reply to this email, your message will be added to the discussion b=
elow:
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n-and-create-a-terrain-in-the-mapper-tp3830p6615.html
> To unsubscribe from Can I use a .tin from microstation and create a terrai=
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Hi! 

The method I know requires 3D=
analyst tool. If you don=E2=80=99t have license for that then I=E2=80=99m a=
fraid I can=E2=80=99t help you.

Good luck! 

Sent from my iPhone

On Nov 2, 2018=
, at 11:46 AM, ibrahim_004@hotmai=
l.com [via HEC-RAS Help] <[email protected]> wrote:

 hi lkhoury,

I do facing same problem, I have tin file from microstation/geopak, w=
ant to make a terrain in Ras mapper, can u guide me step by step, will appre=
ciates. I have access to QGIS.=20

 Thanks

=09
=09
=09

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To unsubscribe from Can I use a .tin from microstation and c=
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[[email protected]]

Thanks

[Author]

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