PlotPanel: what changed

Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.

Title: PlotPanel

New		Line
1	+	> Warning: Currently, PlotPanel is not in active development and is maintained for compatibility only. Please consider using [[TAChart documentation\|Functional series]] of [[TAChart]] package instead.
2	+
3	+	## Plotpanel
4	+
5	+	PlotPanel is a component for Lazarus to replace (more or less) the TChart component. With some modification it can also be used with Kylix, Delphi 5, 6 or 7.
6	+
7	+	With PlotPanel you can draw line- , dot- and bar-graphs. Animated graphs are also possible.
8	+
9	+	This software is presented as is, without any written warranty. So use the software at your own risk.
10	+
11	+	### Screenshot
12	+
13	+	<figure>
14	+	<img src="Plotpanel2.png" title="Plotpanel2.png" />
15	+	<figcaption>Plotpanel2.png</figcaption>
16	+	</figure>
17	+
18	+	## Installation
19	+
20	+	To Install the PlotPanel component in Lazarus you have to do the following:
21	+
22	+	- Download the PlotPanelpackage (plotpanel.zip) from: <http://science4all.nl/?Programming:MICAM:Lazarus> or from [Lazarus CCR SourceForge site](http://sourceforge.net/project/showfiles.php?group_id=92177&package_id=181065).
23	+	- Unzip plotpanel.zip in a directory of your choice.
24	+	- Start Lazarus
25	+	- Perform the necessairy actions to intall the package (see [[Install Packages]]).
26	+
27	+	After you have done that all, there must be a new Tab in the component palet with the name "Extra". You can use the Plotpanel now
28	+
29	+	Run the PlotPanelDemo to explore the features of PlotPanel. N.B. You can try PlotPanel without installing the component by running TryPlotPanel!
30	+
31	+	'''There was a problem with Plotpanel in Lazarus 0.9.28.x
32	+
33	+	On my website (http://science4all.nl/?Programming:MICAM:Lazarus) you can find the updated version: PlotPanel-0.97
34	+
35	+	## Description of the PlotPanel component
36	+
37	+	This is a very rude description of the component. See the examples for an explanation of how to use the component. The PlotPanel component is derived from the TCustomPanel-component. To this Panel plotting capabilities are added.
38	+
39	+	## Properties inherited from TCustomPanel
40	+
41	+
42	+	Align, Anchors, Autosize, BevelInner / Outer / Width
43	+
44	+	Borderspacing, BorderStyle, Borderwidth
45	+
46	+	Color is the color of the border of the plot
47	+
48	+	Constraints, Cursor, Dragmode, Enabled
49	+
50	+	Font is the font of the title of the plot
51	+
52	+	Height, HelpContext, HelpKeyword, HelpType, Hint
53	+
54	+	Left, Name, ParenColor, Parentfont, ParentShowHint
55	+
56	+	PopupMenu, ShowHint, TabOrder, TabStop
57	+
58	+	Tag, Top, Visible, Width
59	+
60	+	## The following properties are added
61	+
62	+
63	+	BackColorThis is the background color of the plotting area
64	+
65	+	GridColorWhen you make this the same as Backcolor, the grid is invisible
66	+
67	+	LayerOptionFor easy plotting of a single layer this can be set to False. It is not possible to set this to True directly (see methods)
68	+
69	+	Margin The width of the border of the plot in pixels
70	+
71	+	PlotMode Three plotmodes are possible: pmBar, pmLine and pmDot
72	+
73	+	PlotPen Properties of the plotting pen. If LayerOption is False, then all sub-properties can be set. If LayerOption is True, then information about the plotting pen is transferred via the LayerOptions method (methods)
74	+
75	+	Title The Title is at the top center of the plot and uses the Font property
76	+
77	+	PlotBMP This is a bitmap holding the whole graph (see demo for its use)
78	+
79	+	The X-axis properties:
80	+
81	+
82	+	XLabel Label at the X-axis
83	+
84	+	XMarks When True, the X-axis has marks
85	+
86	+	XMarksFont Font used for the XMarks
87	+
88	+	XMarksInterval Interval between to lines in the grid (applies for linear scales only)
89	+
90	+	XMax Maximum value of X that is visible
91	+
92	+	XMinMinimal value of X that is visible
93	+
94	+	XScaleLogWhen TRUE the scale is logarithmic (the interval is determined by the component)
95	+
96	+	For the Y-axis the same applies.
97	+
98	+	## Methods:
99	+
100	+	AddXY(X,Y:Extended)
101	+
102	+	` With this method you can add points (or lines) to the plot`\
103	+	` Example`\
104	+	` for i:= -10 to 10 do`\
105	+	` PlotPanel1.AddXY(i,i*i)`\
106	+	` This plots a parbola .The line is plotted with the PlotPen properties`\
107	+	` Note you can only plot a single layer.`
108	+
109	+	AddXY(X,Y:Extended, Color:Tcolor,Layer:Integer)
110	+
111	+	` With this method it is possible to plot up to 8 lines in different colors,`\
112	+	` plotmodes and penwidths (see LayerOptions how to set linewidth and plotmodes)`
113	+
114	+	LayerOptions(Layer:Integer;PlotMode:TPlotMode;PenWidth:Integer)
115	+
116	+	` Every Layer can use a different Plotmode and PenWidth`\
117	+	` When you call this method LayerOPtion will be set TRUE. When you want`\
118	+	` to use a single Layer again you have to set LayerOption False!`
119	+
120	+	Autoscale(Layer:Integer)
121	+
122	+	` With this method you can adjust the size of the plot automaticly`
123	+
124	+	ClearData
125	+
126	+	` Clears the data on the plot.`
127	+
128	+	ConvertS2W(x,y: Extended; var WX,WY : Extended)
129	+
130	+	` Converts the screen-coordinates in X,Y to the real coordinates WX,WY. When`\
131	+	` X and Y are out of bounds, the function returns False, otherwise True`
132	+
133	+	Freeze(Boolean)
134	+
135	+	` When Freeze(True) is executed all plotting is done on a invisible bitmap.`\
136	+	` After a Freeze(False) the whole plot is displayed. This produces flicker-free`\
137	+	` animations.`
138	+
139	+	HideLayer(Layer:Integer)
140	+
141	+	` Use this to hide a single layer in the plot`
142	+
143	+	UnHideLayer(Layer:Integer)
144	+
145	+	` Shows the hidden layer again`\
146	+	` N.B. When you add points to a hidden layer, the old layer is deleted and the`\
147	+	` new points are the only points in this layer!`
148	+
149	+	Paint
150	+
151	+	` Repaints the whole Graph (is done automaticly by the system when necessairy)`
152	+
153	+	Marien van Westen
154	+
155	+	---
156	+	From the Free Pascal wiki, page "PlotPanel", as it stood on 2016-07-18 after a change by Arent, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).
157	+	Category: Charting
158	+	Category: Components
159	+	Category: Graphics

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