[Zoo-discuss] WPS

Thu Nov 21 01:00:14 PST 2013

Hello Anunay,
I think it is wrong to try to use this *really* old win32 binaries.

We are currently using a new version ZOO-Kernel including the Python and Javascript languages support and also the MapServer support.

The MapServer support is, by now, based on a modified version of MapServer 6.2.0 including various patches to fix encoding issue with WFS / GetFeatureInfo request.

As we were asked for we focussed our work on IIS this time. We do not support Apache anymore on Windows platforms. Note that if you are using a Windows 7 professional then you get the IIS server available so it should not hurt that much. Anyway when you will want to deploy your solution you will probably use Windows Server something™ :)

So I think that the best solution for you should be to use the same binary version we are currently using in production projects based on Windows. To make sure you will be able to run it, except from command line (indeed ZOO-Kernel can be easily run from command line on windows platforms), you should first confirm that you get an IIS instance available somewhere where you can run tests.

In such a case I will publish the newer version I have available (latest trunk ZOO-Kernel, MapServer 6.2.0, GDAL 1.10.1, Python 2.7.3) all those softwares were built using Microsoft Visual Studio 2010 Express Edition (the « free » one). It depends on Microsoft Visual C++ 2010 Redistributable Package available for download here: [1].

Note that despite I can provide both main.cfg and binary distribution of ZOO-Project (including C services already build) I guess there will still be some things missing for you. Indeed, you said that you are willing to integrate your own services. Which is standard thing, nevertheless if you plan to implement your services in C then it means that getting only the binaries won’t help you that much. Indeed, you will need the full build tree to be able to build and link your own binaries against the depending ones. Note that if you planned to implement your services by using JavaScript and / or Python language then you won’t have any issue in using only the binaries.	

There is a last issue with which I’m not really familiar is that the GDAL binary was linked against the ECW binary libraries provided by Erdas. But I wonder if I am allowed to distribute this specific DLL or not. I think I am not allowed.

Anyway, please confirm that the binary solution is enough for you then I will upload the binaries for you on the ZOO-Project.org web site.

Hope to hear back from you soon,
Best regards,

[1] http://www.microsoft.com/en-us/download/details.aspx?id=5555

Le 21 nov. 2013 à 08:10, Anunay Sinha <anunay.sinha88 at gmail.com> a écrit :

> I am trying to install ZooWPS on Windows. I am having some trouble with the prerequisites. They are not very specific with the version numbers of the corresponding softwares.
> 1. Anyhow I went ahead and downloaded the latest stable releases(Binaries wherever I can and compiled the rest).
> 2. Next I compiled Libgic
> 3. I Downloaded the OSGGeo4W (It asked about Desktop and WEBGIS and I selected Desktop)
> 4. Next It asked me to download "This Package" which was tool-win32.zip (I am not sure where to add this. For now I have kept it in my path)
> 5. Next it talked about full runtime dependencies to be places in C:OSGeo4WBin (I am assuming it is c:\OSGeo4w\bin
> 6. Next was to download zoo_loader.cgi and the Main.cfg file (I cannot find the Main.cfg file and still looking around for the content of the file)
> 7. Next was to get OGR Service Providers which were provided in Zoo-services-win32.zip. I have placed them in C:\OSGeo4W\bin (It talked about two libraries but i simple copied everything into the bin. Was not sure which two are we talking about here )
> 
> I have no previous experience with CGI and C coded servers so am missing a lot of things here. For instance I dont know where the server is and how to start it? I am looking into these things, but since this whole effort was sort of a POC i will really appreciate if some one can help me run the zoo kernel with OGR and once with my exiting code. So that we can see how it works and decide on what WPS framework to choose. 
> In the mean time I am trying to bridge this gap and get more info on CGI.
> 
> Thanks for your efforts.
> 
> Anunay
> 
> 
> 
> On Tue, Nov 19, 2013 at 1:36 AM, nicolas bozon <nicolas.bozon at gmail.com> wrote:
> Anunay,
> 
> If your code base is in C++, i would definitively recommend you give ZOO a try.
> You could probably use your existing C++ and take advantage of the available GDAL and GRASS support we maintain.
> Also, the MapServer support (i.e the resulting data source(s) of your WPS request is automatically written to a mapfile and it thus makes it very easy to publish as WMS/WFS/WCS) provided by ZOO 1.3 may be of interest for your needs.
> FYI, such capabilities are also used into our MapMint platform, which provides an admin interface to both ZOO, GDAL, MapServer and OpenLayers and that will soon be released open source too.
> Do not hesitate to ask more practical/technical questions publicly or privately if needed.
> Hope it helps
> 
> Best,
> 
> Nick
> 
> 
> 
> 
> 
>  
> 
> 
> 
> 2013/11/18 Anunay Sinha <anunay.sinha88 at gmail.com>
> Thanks. 
> Will post it up there.
> I was for a second interested in Zoo for the same reason (My GIS Engine was initially in C++ so wrapping it with C will be easy compared with the overhead it requires for other languages ). I just wanted to know how is Zoo compared with the rest?
> In terms of acceptance in the market. And what are the points I need to take into consideration when choosing one over the other (you gave me one point, if there are more?)
> 
> I will put up this post in the mailing list you mentioned but just to continue the discussion am keeping this thread running.
> 
> 
> 
> 
> On Mon, Nov 18, 2013 at 11:09 PM, nicolas bozon <nicolas.bozon at gmail.com> wrote:
> Hello Anunay and welcome to this list.
> 
> I think you did a great choice for your 'web based GIS system', because WPS can handle pretty much things for it. 
> 
> As far as i know, there are 5 open source WPS platforms out there, but GeoTools isn't one (although it is used by GeoServer). Your list would then become, by alphabetical order:
> 1. Degree
> 2. GeoServer
> 3. PyWPS 
> 4. ZooWPS
> 5. 52North
> 
> They are all implementing the WPS specification from OGC and they are all open source.
> 
> I guess they are all able to run GIS algorithms available from other open source libraries such as GDAL, GRASS, Sextante, GeoTools, Sextante...,using different methods.
> 
> Most of them are written in Java or Python, but ZOO-Kernel (ZOO-Project engine) is written in C language. 
> This somehow allows him to execute WPS Services coded in different languages (C, Python, Java, JavaScript...), so you won't be limited to only Java or Python. It can open doors to 'any' source code you want to turn into a compliant Web Service. 
> 
> This is my simple ZOOer answer, but i would recommend you post such a generic question to wps-dev at lists.opengeospatial.org, so you would probably get more answers from the different projects developers and users.
> 
> Good luck and feel free to ask more questions on this list too.
> 
> Best regards,
> 
> Nick
> 
> 
> 
> 
> 2013/11/18 Anunay Sinha <anunay.sinha88 at gmail.com>
> We have a requirement where in we need to expose our analysis to a web based GIS system. We decided to do it using WPS. 
> 
> However I have general question about WPS (This may not be the best platform but still.)
> What is a difference between different WPS Frameworks out there
> 1. GeoServer
> 2. GeoTools
> 3. Deegree
> 4 52North
> 5 ZooWPS
> 
> I am not sure which one to choose and what are things I need to consider when making this choice.
> Also if you can let me know where ZooWPS stands when compared with the rest (My thinking here is since they all provide OGC WPS Implementation they all should be doing pretty much the same thing, but that is a wild thought)
> 
> Looking for your help
> 
> 
> Anunay
> 
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> 
> 
> 
> 

Gérald Fenoy
gerald.fenoy at geolabs.fr

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