1. Output formation and slow output

To remedy slow output: hit F12 button every so often. This will clear the screen and output speed goes up.

Explanantion:

Output in EpiData Analysis is created in html format. The same format used on internet pages. The good feature of this is that formatting is easy without a lot of programming. E.g. for reporting users can write:

set echo=off read myfile count if age > 45 /q type "Number of persons was @$count" /h3 tab sex boxplot age /by=sex /ti="Current age structure by sex" set echo = on

and the sentence with "type" will show the number of counts in a header type line (/h3) followed by a table of sex and a boxplot.

The problem of html is however that it is a block structured file format. Therefore each time a line is added the whole output - not just the added line - has to be written on the screen. Therefore the speed of output slows down for every additional line you add.

After a certain length of the output the screen clears automatically. Users cannot control this length (currently).

To remedy slow output: hit F12 button every so often. Then when you have the complete output you wish, save the commands as a pgm file and run all again. Or at some point issue "logclose" and read the resulting logfile (default EAoutput.htm) in a browser.

2: Vista and analysis:

There has been a report that EpiData Analysis cannot run on Windows Vista.

If anyone are using Vista, please report your experiences with this.

I assume that the specific user had insufficient "writing rights" to the Vista machine, since the stopping occurred when trying to open EAoutput.htm as part of the initiation sequence for analysis.

regards

Jens Lauritsen EpiData Association