[Qgis-user] QGIS_EPANET - command line tool

[Larry Shaffer]

Hi,

On Fri, Aug 29, 2014 at 7:45 AM, Francesco Liva <fr.liva at gmail.com> wrote:

> Hi Larry
> Thank you for your e-mail. I am trying to change the instances as you
> mentioned, writing in TERMINAL the:
> ~/.qgis2/python/plugins/ghydraulic/GHydraulicsModelMaker.py
>
> But the answer is:
>
> -bash:
> /Users/francescoliva/.qgis2/python/plugins/ghydraulic/GHydraulicsModelMaker.py:
> Permission denied
> F-Liva-Apple:~ francescoliva$
>
> May be I did something wrong, How shall I change all the INSTANCES ?
>

I meant open the .py file in a text editor and do a find/replace of all
instance of the text string.

A good, free (though not open source) code editor is TextWrangler from
BareBones:
http://www.barebones.com/products/textwrangler/

Regards,

Larry Shaffer
Dakota Cartography
Black Hills, South Dakota



> Best Regards
> Francesco Liva
>
> ______________________________
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>
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>
> Fr.Liva at gmail.com
> ☏ Francesco.Liva
>
>
>
>
>
> On 29 Aug 2014, at 15:16, Larry Shaffer <larrys at dakotacarto.com> wrote:
>
> Hi Francesco,
>
> I have looked into this and wine is not needed. However, there are still
> some hurdles. I will list the steps so that it is as straightforward as can
> be (or as much as it can be from me  :-) :
>
> 1. Install the GHydraulics plugin. This plugin actually contains command
> line binaries of epanet for Linux, Win, and Mac; though, it is actually
> against plugin policy to distribute pre-compiled binaries with plugins
> through the official QGIS repository. Nonetheless, it is a good thing for
> you and other Mac users.  :-)
>
> This means GHydraulics actually works right out-of-the-box. There is a bug
> in one of the sources, though.
>
> In ~/.qgis2/python/plugins/ghydraulic/GHydraulicsModelMaker.py:
>
> Change ALL instances of
>   QgsMapLayerRegistry().instance().mapLayers()
> to
>   QgsMapLayerRegistry.instance().mapLayers()
>
> I'll be reporting this upstream to http://epanet.de/
>
> NOTE: some of the reporting from the plugin is actually sent to the Log
> Messages Panel. Choose 'View -> Panels -> Log Messages' to ensure it is
> visible.
>
> See also:
> http://epanet.de/ghydraulics/index.html
> http://sdteffen.blogspot.com/search/label/GHydraulics
>
> 2. Since you already have an epanet2d command line binary for Mac, you can
> just use its path for the configuration of the 'qgis_epanet' plugin:
>
> /Users/<user>/.qgis2/python/plugins/ghydraulic/bin/osx/epanet2d
>
> NOTE: replace <user> with your short user name.
>
> There is some sample data to play with available in the github.com
> repository:
> https://github.com/Oslandia/qgis-epanet#testing
>
> I did have an issue when running a simulation, due to a missing Hydraulics
> file (could not resolve).
>
> 3. I think I will add epanet command line utilities to OSGeo4Mac, so this
> is simpler to set up.
>
>
> Regards,
>
> Larry Shaffer
> Dakota Cartography
> Black Hills, South Dakota
>
>
> On Wed, Aug 27, 2014 at 10:28 AM, Francesco Liva <fr.liva at gmail.com>
> wrote:
>
>> Hi Larry
>> Yes thankyou
>>
>> I have found something else which may be helpful.
>>
>> on:  http://www.oslandia.com/qgis-plugin-for-water-management-en.html
>>
>>
>> Once the hydraulic model and simulation parameters are loaded in QGIS,
>> the simulation can be launched through the*Processing* toolbox. The
>> plugin uses the standalone command line interface of EPANET (CLI) which
>> path needs to be specified in processing Options and configuration.
>> The plugin assembles an EPANET input file, runs EPANET and parses its
>> output to generate result layers.
>> One interesting aspect with processing modules is that they can be used
>> for chained processing: the user can use other modules to do additional
>> transformations of simulation results, as feeding them into another
>> simulation model.
>>
>> Best Regards
>> Francesco Liva
>>
>> ______________________________
>>    27, Triq Ix-Xatt, Kalkara, Malta
>> ☎ +356 99 38 01 68 mobile
>> ☎ +356 27 32 76 78 home
>>
>>
>>
>>
>
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