Hello Yeray,
many thanks.
- Uli
Search found 9 matches
- Wed Jul 12, 2017 8:34 am
- Forum: VCL
- Topic: How to create a real smooth curve?
- Replies: 5
- Views: 10874
- Tue Jul 11, 2017 2:38 pm
- Forum: VCL
- Topic: How to create a real smooth curve?
- Replies: 5
- Views: 10874
Re: How to create a real smooth curve?
Hello Yeray, THorizLineSeries seems not to work properly. Series2.XValues.Order:=loNone; Series2.HasZValues:=True; seems to work. But adding e.g. another point by Series1.AddXY(1300,-1.2,'',clTeeColor); between X=1000 and X=2000 (is ascending X sequence) creates a picture like Smoothing2.PNG So the ...
- Tue Jul 11, 2017 12:01 pm
- Forum: VCL
- Topic: How to create a real smooth curve?
- Replies: 5
- Views: 10874
How to create a real smooth curve?
Hi, I have the following simple code based on a chart with two line series: procedure TForm1.FormCreate(Sender: TObject); begin Chart1.BottomAxis.Logarithmic := true; Chart1.BottomAxis.Automatic := false; Chart1.BottomAxis.Maximum := 10000; Chart1.BottomAxis.Minimum := 10; Chart1.LeftAxis.Maximum :=...
- Wed Jun 21, 2017 2:56 pm
- Forum: VCL
- Topic: How to get reasonable X axis markers
- Replies: 9
- Views: 16271
Re: How to get reasonable X axis markers
Hello Yeray, I have refined the code for correctness, speed and clarity. It contains some specialties as a user can zoom into between the major ticks. The minor ticks are still shown, the chart ends show labels to inform about the x axis values. If there is a major label too close to a chart end the...
- Tue Jun 20, 2017 2:25 pm
- Forum: VCL
- Topic: How to get reasonable X axis markers
- Replies: 9
- Views: 16271
Re: How to get reasonable X axis markers
Hello Yeray, after struggling around with switching linear and logarithmic x-axis including zooming I have now come to the following solution: procedure TForm1.Chart1AfterDraw(Sender: TObject); var i, j: integer; maxx, minx, Position: Double; Chart: TChart; begin Chart := TChart(Sender); maxx := Cha...
- Sun Jun 18, 2017 3:50 pm
- Forum: VCL
- Topic: How to get reasonable X axis markers
- Replies: 9
- Views: 16271
Re: How to get reasonable X axis markers
Yeray,
thanks.
1)
I'll study on using the custom labels. At first look it is ok, but in combination with zooming this may be tricky. Because I may need to design custom labels for each zoom situation.
2)
I have cc'd to the bug list regarding the minor ticks display bug
BR
Uli
thanks.
1)
I'll study on using the custom labels. At first look it is ok, but in combination with zooming this may be tricky. Because I may need to design custom labels for each zoom situation.
2)
I have cc'd to the bug list regarding the minor ticks display bug
BR
Uli
- Wed Jun 14, 2017 9:21 am
- Forum: VCL
- Topic: How to get reasonable X axis markers
- Replies: 9
- Views: 16271
Re: How to get reasonable X axis markers
Hello Yeray, I have done some further tests. The devil is given by Chart.BottomAxis.Increment. By default the value is 0 and we get x axis labels at positions 1, 10, 100, 1000 ... If the value is changed to 1 then we get x axis labes at 1000, 2000, 3000 ... But if the chart is zoomed the labels can ...
- Mon Jun 12, 2017 12:03 pm
- Forum: VCL
- Topic: How to get reasonable X axis markers
- Replies: 9
- Views: 16271
Re: How to get reasonable X axis markers
Hello Yeroay, thanks, I'll prep some example code. In the meantime I have also detected that the appearance of the x axis labes also depends on the window size. So resizing the application window changes the labels. And this also leads to a problem as even if the desktop window may nicely show up th...
- Sun Jun 11, 2017 6:30 am
- Forum: VCL
- Topic: How to get reasonable X axis markers
- Replies: 9
- Views: 16271
How to get reasonable X axis markers
Hi, I need to create charts with a logarithmic x axis. Furthermore it is necessary to zoom into the charts. This leads to strange x axis markers and ticks. Some examples: htklirr_linkst0u42.png hmtklirr_linkskiuq5.png tmtklirr_rechtsb8upw.png So how to control the appearance of major, minor ticks an...