Marjan,

Thanks so much for all your help.

Craig

Would "TCanvas3D.ZLine3D" work? I was thinking if I made the line heavy enough it may mimic a cylinder in 3D space, and a round point in 2D.

Thanks....I also looked briefly at the TTeeCanvas3D.Cylinder Cylinder(Vertical: Boolean; Left, Top, Right, Bottom, Z0, Z1: Integer; Dark3D: Boolean); override; I'm guessing that the cylinder will work perfectly in my situation. I would also guess that if I set vertical to true, then Left and Right w...

Is it possible to construct a scatter plot in which the points are located in 3-dimensional space, and have a certain depth? I would like to be able to plot concentration data associated with soil samples (located by x,y) from specfic depth intervals (z-z') and then color code by concentration. Thanks

You may want to check out the Piper Diagram while you look at trilinear plots. It is basically two trilinear plots, connected to a diamond shaped plot. It is used by hydrogeologists to plot the chemistry of water from wells to determine origin.

Thanks again for your prompt replies.

Is there a way to plot trilinear plots with TeeChart. A trilinear plot is triangular in shape and plots the relative percentage of three variables. Each axis is 0-100%.

Is it possible to change the style of a pointer within a series based on a value? For example, can I change the pointer from a psCircle to a psDiagCross and then back as I evaluate data from a query and supply it to the chart? I would like to make a line chart that would have pointers with a value o...

I want to programatically set the minimum Y value at 0, but leave the maximum as automatic. Is there a way to use "SetMinMax"?

Perfect...Thanks a million!

I have a chart whose series are created at the OnShow event for my form. I have a while loop that moves through a query to establish multiple series. Everything works great until I close the form and open it again, then I end up with twice as many series. How do I reinitialize the series so I do not...

I've tried the code you supplied, but with no luck. D7 doesn't seem to understand the "SeriesExists" function. What am I doing wong?

I understand how to set the date value as the x-axis. What I need to do is figure out how TeeChart understands when it encounters a new well in my long list wells and then how it undertsands the new dates associated with those new wells. For example, how do I get 2 series (MW-01 and MW-02) out of th...

I have a D7 App that allows users to retrieve groundwater levels measured in wells over long periods of time. The data is organized by well, date, and water level elevation. How do I permit users to graph more than one well at a time (many series) in the correct time series position (not all wells a...

I want to improve on the data aware gantt's very basic functionality. I want to be able to change the color of the bar based on it status, which is provided in the data record along with its name, begin date and end date. Also I want to find out if it is possible to make a "Project Bar" that automat...