-----Original Message-----
From: Vasily I. Volchenko <[EMAIL PROTECTED]>
To: Luiz Americo Pereira Camara <[EMAIL PROTECTED]>
Date: Tue, 20 Nov 2007 17:44:51 +0300
Subject: Re[2]: [lazarus] Plots
>
> > Hi,
> >
> > Thanks, i got the packages and successfully compiled. But i did not find
> > example of how to use it.
> >
> > Can you post some small examples?
> >
> > Luiz
> >
> Presently it is quite difficult for me (as I am at work). As far as I
> remember, there are the following rules:
> 1. TCustomPlot:
> simple plotting control. You need to make a set of points, and them will be
> connected with line. Points should be set via Points property, which is a
> decendent of TStrings. So, in program you need to set points[i].x and
> points.y. In ObjectInspector you may edit it as a stringlist, each line is a
> point in format x:y, where x and y are float falues.
> XMin,XMax,YMin,YMax - float properties for setting plot borders.
> Alternatively you may set AutoSizeX and/or AutoSizeY to true, so all points
> must be shown.
> HasMarks means whether axes have a marks (float numbers). NMarksX and NMarksY
> shows how many such marks will be at the correspondend axis. XSpacer and
> YSpacer means how many space (in pixels) are left for float marks.
> XMarkDigits, YMarkDigits,XMarkDecimals, YMarkDecimals are about formatting
> the values.
> 2. TFunctionPlot:
> Almost the same (it can work the such way), but a new event (OnFunctionCall)
> is defined. You should write a function body in it, like
> begin
> y=sin(x);
> end;
> Nothing more. Besides, AutoSizeX means nothing while plotting functions, you
> should set MinX and MaxX.
> Property DividingTabs means how many points will be used to tabulate (and
> then draw) the function.
>
> Wiki and examples will be tomorrow. Surface3d too.
>
> Sorry for my terrible English. This is because all mathematical courses (from
> the beginning school's mathemathics to mathematical modelling in post
> graduate) were in Russian, and technical English doesn't include mathematics.
>
_________________________________________________________________
To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe" as the Subject
archives at http://www.lazarus.freepascal.org/mailarchives
