created an attachment (id=157492)
test report

description:
preview the attached report design, the scatter chart displayed more data points than it should.

build id:
2.5.2 v20100127-0630

steps to reproduce:
1. get the attached report.
2. open in birt and check the data set bound to the scatter chart.it contains a few data points.
3. preview the chart.

actual result:
the scatter chart displays more data points. if you delete other charts, the scatter chart is displayed correctly.
created an attachment (id=157493)
screen shot
it is strange, when i move scatter chart as first chart in report, the displayed data in scatter chart are correct, and the created query definition of scatter chart is same with chart not in the first. the only difference is the returned result set contains much more data than actual.

it needs data engine take a look.
data set cache has been refactored in 03/02/2010 and no such issue is found in the latest nightly build. mark it fixed.
verified on build 2.5.2 v20100205-0630 and close.
verified and close
verified and close