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Thanks to everyone for very helpful suggestions. I'm going to try to reply to lots of people at once! Sorry if this should have been on the developers' mailing list. Julien - I need to render images (PNG, JPEG, GIF) on a server, for transmission to a client over the web. So I don't want to use Swing, AWT or any desktop-based windowing frameworks. Ideally I'd just like to render a BufferedImage. Don/Jeff - thanks for the suggestions. Given that I can already create a 2D array of values (a "raw" array, separate from the whole GeoGrid set of classes), I think it's worth my looking at VisAD and seeing if I can use this directly, outside of the IDV. Does this sound like a good idea? I'm excited to hear that you're looking at integrating ncWMS with RAMADDA! I'm very happy to help with this, irrespective of my success or otherwise with IDV. Just drop me a line (or subscribe to ncWMS-users, http://ncwms.sf.net) if you have any questions. Cheers, Jon -----Original Message----- From: idvusers-bounces@xxxxxxxxxxxxxxxx [mailto:idvusers-bounces@xxxxxxxxxxxxxxxx] On Behalf Of idvusers-request@xxxxxxxxxxxxxxxx Sent: 19 January 2011 19:00 To: idvusers@xxxxxxxxxxxxxxxx Subject: idvusers Digest, Vol 23, Issue 8 Send idvusers mailing list submissions to idvusers@xxxxxxxxxxxxxxxx To subscribe or unsubscribe via the World Wide Web, visit http://mailman.unidata.ucar.edu/mailman/listinfo/idvusers or, via email, send a message with subject or body 'help' to idvusers-request@xxxxxxxxxxxxxxxx You can reach the person managing the list at idvusers-owner@xxxxxxxxxxxxxxxx When replying, please edit your Subject line so it is more specific than "Re: Contents of idvusers digest..." Today's Topics: 1. Re: API for vertical section plots (Julien Chastang) 2. Re: API for vertical section plots (Jeff McWhirter) 3. Re: API for vertical section plots (Don Murray) 4. Re: API for vertical section plots (Don Murray) ---------------------------------------------------------------------- Message: 1 Date: Tue, 18 Jan 2011 15:00:42 -0700 From: Julien Chastang <chastang@xxxxxxxx> To: idvusers@xxxxxxxxxxxxxxxx Subject: Re: [idvusers] API for vertical section plots Message-ID: <4D360D8A.8010409@xxxxxxxx> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi Jon, I am a bit confused as to where you wish your "baseline" abstraction to be. It sounds like you do not want to use Swing, which means you will have to start at a very low level (java.awt?) At any rate, you may want to look at visad (http://www.ssec.wisc.edu/~billh/visad.html), the graphical rendering library for the IDV. Good luck. -Julien On 1/17/11 2:13 PM, Jon Blower wrote: > Dear IDV folk, > > I've seen that IDV can produce vertical section plots. I'm interested in > re-using this capability in other software (ncWMS) if possible. I'd like to > produce a plot as a standalone image (i.e. outside the context of Swing or > any particular desktop), ideally as a BufferedImage. Could someone please > point me to the relevant bit in the libraries please? > > Thanks, > Jon > _______________________________________________ > idvusers mailing list > idvusers@xxxxxxxxxxxxxxxx > For list information, to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ > ------------------------------ Message: 2 Date: Tue, 18 Jan 2011 18:38:59 -0700 From: Jeff McWhirter <jeffmc@xxxxxxxxxxxxxxxx> To: Jon Blower <j.d.blower@xxxxxxxxxxxxx> Cc: "Kevin X. Yang" <k.yang@xxxxxxxxxxxxx>, "idvusers@xxxxxxxxxxxxxxxx" <idvusers@xxxxxxxxxxxxxxxx> Subject: Re: [idvusers] API for vertical section plots Message-ID: <AANLkTikUUq2JEnHkMHAHosH15SYaLtu=R4PWPbpLxUOY@xxxxxxxxxxxxxx> Content-Type: text/plain; charset=ISO-8859-1 Hi Jon, > I've seen that IDV can produce vertical section plots. I'm interested in > re-using this capability in other software (ncWMS) if possible. I'd like to > produce a plot as a standalone image (i.e. outside the context of Swing or > any particular desktop), ideally as a BufferedImage. Could someone please > point me to the relevant bit in the libraries please? > > You can use the IDV in server mode, creating an ISL file that generates a cross section display and capturing it as an image. You can see some example code in the ramadda svn tree: https://sourceforge.net/projects/ramadda/ under src/ucar/unidata/repository/idv/IdvOutputHandler This is basically a web based implementation of the IDV. Using the regular Cross Section display to do this would be inefficient because the display would also be adding itself into a 3D view. However, if you are interested I could work with you to make any necessary changes to the IDV base. Of course, you have to help me implement ncwms in RAMADDA (which I just started doing last weekend. go figure). -Jeff ------------------------------ Message: 3 Date: Tue, 18 Jan 2011 19:09:41 -0700 From: Don Murray <Don.Murray@xxxxxxxx> To: idvusers@xxxxxxxxxxxxxxxx Subject: Re: [idvusers] API for vertical section plots Message-ID: <4D3647E5.9060208@xxxxxxxx> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Jon- This is probably a discussion better for idvdevelopers so as not to scare off the non-programmer IDV users ;-) , but.... The IDV uses the VisAD Data model not the netCDF CDM as the basis for the data it slices and dices. VisAD allows arbitrary samplings into a grid not limited to rows/columns like netCDF. However, there are IDV classes that take CDM GeoGrid objects and make the requisite VisAD Fields. So, another lightweight approach might be to use the ucar.unidata.data.grid.GeoGridAdapter to create a VisAD FieldImpl from a GeoGrid and then use ucar.unidata.data.grid.GridUtil.sliceAlongLatLonLine() to get the slice as a FieldImpl. Basically, that will be a 2D array that you could then export to whatever graphics you want. It would require some understanding of the VisAD data model. It might also need some adjustments to the GeoGridAdapter methods to use outside the context of the IDV. But, as Jeff said, we'd trade that knowledge for help implementing ncWMS in RAMADDA. ;-) Don On 1/18/11 6:38 PM, Jeff McWhirter wrote: > Hi Jon, > > >> I've seen that IDV can produce vertical section plots. I'm interested in >> re-using this capability in other software (ncWMS) if possible. I'd like to >> produce a plot as a standalone image (i.e. outside the context of Swing or >> any particular desktop), ideally as a BufferedImage. Could someone please >> point me to the relevant bit in the libraries please? >> >> > You can use the IDV in server mode, creating an ISL file that generates a > cross section display and capturing it as an image. > You can see some example code in the ramadda svn tree: > https://sourceforge.net/projects/ramadda/ > under src/ucar/unidata/repository/idv/IdvOutputHandler > This is basically a web based implementation of the IDV. > > Using the regular Cross Section display to do this would be inefficient > because the display would also be adding itself into a 3D view. However, if > you are interested I could work with you to make any necessary changes to > the IDV base. > > Of course, you have to help me implement ncwms in RAMADDA (which I just > started doing last weekend. go figure). > > -Jeff > _______________________________________________ > idvusers mailing list > idvusers@xxxxxxxxxxxxxxxx > For list information, to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ -- Don Murray NOAA/ESRL/PSD and CIRES 303-497-3596 http://www.esrl.noaa.gov/psd/people/don.murray/ ------------------------------ Message: 4 Date: Wed, 19 Jan 2011 08:16:17 -0700 From: Don Murray <Don.Murray@xxxxxxxx> To: idvusers@xxxxxxxxxxxxxxxx Subject: Re: [idvusers] API for vertical section plots Message-ID: <4D370041.3000801@xxxxxxxx> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Jon- The attached program will get a slice from a grid as a VisAD FieldImpl and print it out. You can test it using: java TestSlice http://motherlode.ucar.edu/repository/entry/show/output:data.opendap/entryid:f20290c6-9ee3-4d5a-b3c0-f72010abfc38/CONUS_80km_20090606_1200.grib1/dodsC/entry.das Temperature This is accessing the grid via OPeNDAP from the Unidata RAMADDA server but you can use a local file. If you need more help, contact me directly. Don On 1/17/11 2:13 PM, Jon Blower wrote: > Dear IDV folk, > > I've seen that IDV can produce vertical section plots. I'm interested in > re-using this capability in other software (ncWMS) if possible. I'd like to > produce a plot as a standalone image (i.e. outside the context of Swing or > any particular desktop), ideally as a BufferedImage. Could someone please > point me to the relevant bit in the libraries please? > > Thanks, > Jon > _______________________________________________ > idvusers mailing list > idvusers@xxxxxxxxxxxxxxxx > For list information, to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ -- Don Murray NOAA/ESRL/PSD and CIRES 303-497-3596 http://www.esrl.noaa.gov/psd/people/don.murray/ -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: TestSlice.java URL: <http://mailman.unidata.ucar.edu/mailing_lists/archives/idvusers/attachments/20110119/ecb86468/attachment.java> ------------------------------ _______________________________________________ idvusers mailing list idvusers@xxxxxxxxxxxxxxxx For list information, to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/ End of idvusers Digest, Vol 23, Issue 8 ***************************************
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