Hi Phillip, There is a spreadsheet built into VisAD: http://www.ssec.wisc.edu/~curtis/ss.html The visad/rabin/RainSheet.java program distributed as part of the VisAD source JAR file is a simple example of how to use the visad.ss classes to build a custom spreadsheet. The visad/rabin/Rain.java program is a spreadsheet that doesn't use the classes in visad.ss but does include direct manipulation of a value (2-D cursor) in a spreadsheet cell. Scroll down to the heading "Rainfall Estimation Custom SpreadSheet" on the VisAD web page: http://www.ssec.wisc.edu/~billh/visad.html This web page lists a number of other examples that use direct manipulation. You can an overview of VisAD direct manipulation at: http://www.ssec.wisc.edu/~billh/VisGUI.html and technical information about direct manipulation in section 1.8 of: http://www.ssec.wisc.edu/~billh/dr_tutorial.html Good luck, Bill ----- Original Message ----- From: "Phillip Kent" To: visad@xxxxxxxxxxxxxxxx Subject: [visad] Question about a spreadsheet-type application Date: Wed, 09 Sep 2009 18:12:36 +0100 I just discovered VisAD and am very impressed by its capabilities, particularly in the Visualization Spreadsheet. I need to develop an application which is not like any of the VisAD examples, so I am unsure if VisAD is a viable or sensible choice to code with. I'm thinking about a spreadsheet where mostly the entries are simple numbers, but some entries may be (static) images, or possibly small (and few variable) data sets. For the simple number cells I need to do standard formula-based calculations. So it's a sort of 'multimedia spreadsheet' to be used for recording different kinds of data, and to be able to organise and 'play around' with the data. This is to support a learning application for decision-making with quantified (statistical) and unquantified data. The other specific thing I need is to be able to construct 2D charts from numerical entries in the spreadsheet, and to have direct manipulation of the values in the individual data cells by dragging the data point displayed in the chart [Excel had this as a built-in function prior to version Excel2007]. That's the basic, if there were neat ways to do more complex direct manipulation that would be a bonus. Thanks for any suggestions! - Phillip ++++++++ Dr Phillip Kent London Knowledge Lab - Institute of Education 23 - 29 Emerald St London WC1N 3QS p.kent@xxxxxxxxx tel 020 7763 2156 mobile 07950 952034 www.RISKatIOE.org , www.phillipkent.net ++++++++ "When you try to find the people, it always in the end comes down to somebody" Dos Passos _______________________________________________ visad mailing list visad@xxxxxxxxxxxxxxxx For list information, to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/ -- An Excellent Credit Score is 750 See Yours in Just 2 Easy Steps!