Search found 5 matches

by oysterbayer
Tue Jun 07, 2005 5:56 am
Forum: VCL
Topic: Switching to Logarithmic Y Axis
Replies: 8
Views: 6523

I have downloaded v7.04, installed it, and I get the same bug. Here is the trace: exception class : EZeroDivide exception message : Floating point division by zero. main thread ($ce4): address exe/dll unit lineno procedure-name 005c786b IHA7.exe Series 1427 CalcYPosLeftRight 005c909a IHA7.exe Series...
by oysterbayer
Fri Jun 03, 2005 4:45 am
Forum: VCL
Topic: Switching to Logarithmic Y Axis
Replies: 8
Views: 6523

I have tracked the problem down in the SERIES unit, and made a fix to my version of the source code that stops the Exception from occuring. The issue seems to be that the routine CalcYPosLeftRight attempts to take the Natural Log of a Zero; the LN function raises the EZeroDivide exception (i believe...
by oysterbayer
Thu Jun 02, 2005 6:46 pm
Forum: VCL
Topic: Switching to Logarithmic Y Axis
Replies: 8
Views: 6523

narcis wrote:Why do you needed to do that?
It looked better when we add the zeros.
by oysterbayer
Thu Jun 02, 2005 4:07 pm
Forum: VCL
Topic: Switching to Logarithmic Y Axis
Replies: 8
Views: 6523

When I open this file with TChartOffice 7.02, and convert the Y Axis to logarithmic, it works fine. However, when I slide the hand "up", exposing zero and negative values for the Y Axis (now logarithmic) I get a zeroDivide condition. It seems to me that the TChart should recognize that the Y axis ca...
by oysterbayer
Thu Jun 02, 2005 2:30 am
Forum: VCL
Topic: Switching to Logarithmic Y Axis
Replies: 8
Views: 6523

Switching to Logarithmic Y Axis

My users would like to be able to use TChart's ability to view data on either a linear or logarithmic scale. The file - http://oli.tottensoftwaredesign.com/linear.tee is an example of data that has zeros present on the y axis. These were added so that a line-series would look right when zoomed-in on...