Steema Central

Hi,

I have to create a plot of a chart with a defined length of vertical and horizontal axes. For example I have a chart with a vertical axis form 0 to 25 and a horizontal axis from 0 to 350. I have to print the chart with a horizontal axis length of 10 cm and a vertical axis length of 20 cm.

My Code
...
Chart1.Axes.Left.Automatic:=false;
Chart1.Axes.Bottom.Automatic:=false;
Chart1.Axes.Left.Maximum:= 25;
Chart1.Axes.Left.Minimum:=0;
Chart1.Axes.Bottom.Maximum:=350;
Chart1.Axes.Bottom.Minimum:=0;
Chart1.PrintProportional:=false;
Chart1.Axes.Left.PositionUnits:=muPixels;
Chart1.Axes.Left.StartPosition:=0;
Chart1.Axes.Left.IAxisSize:=4724;
Chart1.Axes.Bottom.PositionUnits:=muPixels;
Chart1.Axes.Bottom.StartPosition:=0;
Chart1.Axes.Bottom.IAxisSize:=2362;
Chart1.Print;

creates a plot of 17.6 cm x 9.3 cm.

Where is my mistake? Thanks

Roland

Hi Roland,

You should be able to do something similar to the example at All features\Welcome !\Axes\Isometric Axis.

Hi Yeray,

my problem is not to change the axes minimum or maximum to create isometric axes. I have a fixed minimum and maximum and will print a axis with a defined length (with printer resolution a defined number of pixels per axes). The scale of horizontal and vertical axes may be different.

Best regards

Roland

Hi Roland,

Yes but that example uses functions that may help you on finding a way to achieve what you want. Here is another example of how you could convert Pixels to MM, if it helps:
http://delphi.about.com/od/adptips2005/qt/pixel2mm.htm