Search found 8 matches
- Fri Jul 13, 2007 2:23 pm
- Forum: VCL
- Topic: Is it possible not to load null-values into DBChart?
- Replies: 3
- Views: 4094
The problem is that all the functionality depends on there not-being nulls in the series. I would need to add if IsNull(i) into a lot of places. On some places it would be simple, while on some places it would not be as simple. In addition, it would require re-testing the whole chart functionality, ...
- Thu Jul 12, 2007 10:30 am
- Forum: VCL
- Topic: Is it possible not to load null-values into DBChart?
- Replies: 3
- Views: 4094
Is it possible not to load null-values into DBChart?
I have a table connected with DBChart. I have many signals that are draw on the same chart. These signals have different sampling rates, which means that for one signal I may have 100 samples, while for another I may have only 10. Yet they all live in the same table. When the signals are loaded into...
- Tue Jul 10, 2007 10:50 am
- Forum: VCL
- Topic: Problem with skipping nulls
- Replies: 3
- Views: 4104
- Tue Jul 10, 2007 10:20 am
- Forum: VCL
- Topic: Problem with skipping nulls
- Replies: 3
- Views: 4104
- Tue Jul 10, 2007 10:02 am
- Forum: VCL
- Topic: Problem with skipping nulls
- Replies: 3
- Views: 4104
Problem with skipping nulls
Hello. I am using DBChart to store about 3x200K points (3 series). The series contain data sampled at different rates, therefore in some cases there are a lot of nulls. In previous versions, I deleted all nulls using loops, which is very slow when there are many nulls. Now I would like to speed thin...
- Tue Jun 19, 2007 2:07 pm
- Forum: VCL
- Topic: Problem with the VisibleCount property
- Replies: 3
- Views: 3670
- Mon Jun 18, 2007 3:10 pm
- Forum: VCL
- Topic: Problem with the VisibleCount property
- Replies: 3
- Views: 3670
Problem with the VisibleCount property
I have been implementing code to export the data points that are currently being viewed (are visible). I am using the properties Series1.VisibleCount, and Series1.FirstdisplayedIndex to determine which points get exported. It works fine when exporting, until I start zooming-in. When I zoom-in Series...
- Fri Jun 08, 2007 12:17 pm
- Forum: VCL
- Topic: Problems with Page Navigating and Zoom
- Replies: 1
- Views: 2455
Problems with Page Navigating and Zoom
Hello, I am using TChartPageNavigator to enable users to divide data up into pages, defined by the Points Per Page setting in the Chart Editor, under Chart->Paging. I am having the following problem, when I zoom into an area of the chart, and then try to navigate using the arrows on the TChartPageNa...