HECRAS Controller in other language

[Anonymous]

I bought the book “breaking the hec-ras code” and really like the insights. Learnt a lot by following the examples in the book. For example, we can do the following in VBA:

Dim lngNum_RS As Long
Dim strRS() As String ‘Name of the river reach
Dim strNodeType() As String

lngRiverID = 1
lngReachID = 1
RC.Geometry_GetNodes lngRiverID, lngReachID, lngNum_RS, strRS(), strNodeType()

The number of river reaches can be passed to the argument lngNum_RS. But in other languages (for example, python), this “passing by reference” mechanism might not work and with python, I can’t get the number of river reaches in the same way.

I think my question is, what is the general rule to use this type of “passing by reference” functions in HECRAS Controller with python? Do we have a document for the HECRASController COM in python?

Thank you!

[Chris G.]

Kevin-

I wish there was a document that covers some RASController coding strategies in python. More and more people are using python with the RASController, so I know it can be done.

One alternative way you might consider is to read your geometry directly from the geometry input file. Chapter 4 of the book covers this topic and Appendix B has all of the geometry input file keys

Chris

[kevin]

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From: Kevin Liu
Date: Thu, 27 Jul 2017 13:54:00 -0700
Message-ID:
Subject: Re: HECRAS Controller in other language
To: “Chris G. [via HEC-RAS Help]”
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–94eb2c12292e9ba6dd055552c37f
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Chris, thank you for your reply!

I totally agree. If someone starts a project to make python code for
example cases and document them, many users would be interested in
participating.

At this point, it would be very helpful if any experienced user could point
out the general rule to call the functions (with return value in arguments
by reference) in python.

Thanks!

On Thu, Jul 27, 2017 at 6:50 AM, Chris G. [via HEC-RAS Help] < [email protected]> wrote:

> Kevin-
>
> I wish there was a document that covers some RASController coding
> strategies in python. More and more people are using python with the
> RASController, so I know it can be done.
>
> One alternative way you might consider is to read your geometry directly
> from the geometry input file. Chapter 4 of the book covers this topic an=
d
> Appendix B has all of the geometry input file keys
>
> Chris
> Chris G.
> @RASModel
> http://www.therassolution.com
>
>
> ——————————
> If you reply to this email, your message will be added to the discussion
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> Controller-in-other-language-tp4267p4276.html
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–94eb2c12292e9ba6dd055552c37f
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Chris, thank you for your reply!

I totally agree. If someone starts a project to make python code for exa=
mple cases and document them, many users would be interested in participati=
ng.

At this point, it would be very helpful if any experience=
d user could point out the general rule to call the functions (with return =
value in arguments by reference) in python.=C2=A0

Thanks!
=

On Thu, Jul=
27, 2017 at 6:50 AM, Chris G. [via HEC-RAS Help] <ml+s109=
[email protected]> wrote:

ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-le= ft:1ex">

Kevin-

I wish there was a document that covers some RASController coding s=
trategies in python.=C2=A0 More and more people are using python with the R=
ASController, so I know it can be done. =C2=A0

One alternative way you might consider is to read your geometry dir=
ectly from the geometry input file.=C2=A0 Chapter 4 of the book covers this=
topic and Appendix B has all of the geometry input file keys

Chris=20

=09
=09

Chris G.

@RASModel

http://www.therass=
olution.com

---

If you reply to this email, your message =
will be added to the discussion below:

http://hec-ras-help.109=
1112.n5.nabble.com/HECRAS-Controller-in-other-language-tp426=
7p4276.html

=09
To unsubscribe from HECRAS Controller in other language, click here.
NAML

–94eb2c12292e9ba6dd055552c37f–

[Anonymous]

I am starting on C++ project to interact with HEC-RAS and so am interested in this forum and will probably purchase the “Breaking the HEC-RAS Code” book.
However, I have found that you can look inside the ras.exe from within VisualStudio (menu view->object browser, then select Custom Component Set, click on the “…” button and find the HEC River Analysis System under the COM tab). From there you can see at least the functions and their parameters.

Stay tuned as this project develops.

[robgrhamsydney]

Max,

I am also interested in the C++ project to interact with HEC-RAS. Have you had any success?

[Author]

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