Wednesday, March 21, 2012

GWT wrapper for visualization treemap with mouse events

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A treemap is a helpful visualization of a data tree. It would be nice if the treemap had features like weighted box sizes for intermediate ...
1 comment:
Tuesday, March 20, 2012

Postgres script - for loop two dimension array using array upper and lower

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A basic script to loop over an array in psql- CREATE OR REPLACE FUNCTION func1(n character varying, v character varying) RETURNS i...
1 comment:
Saturday, October 15, 2011

Problem - GWT logging not working

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When you inherit certain modules in .gwt.xml file, it disables GWT logging. This happened to me when I tried inheriting Requestfactory. Som...

Executing Postgres crosstab query as a prepared statement

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I was executing a crosstab query as a prepared statement in Java(in a GWT app) and getting the following error - PSQLException - Can...

PostgreSQL crosstab query - Rotate a table about a pivot

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An interesting feature of relational databases(postgres in this case) is the ability to rotate the table about a pivot. So if you have data...
4 comments:
Thursday, September 15, 2011

Virtualbox-Windows 8 developer preview installation error

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Downloaded the Windows 8 developers preview yesterday but only to find I could not get it installed on a Oracle Virtualbox. I tried both 32...
4 comments:
Thursday, March 17, 2011

Wxpython snippet - A date time control

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Make sure you have installed wxwidgets . # Create date control self.dateCtrl = wx.DatePickerCtrl(panel, -1, pos=(130, 70)) #create ...