Recent changes to Home

Home modified by cah12

cah12 — Tue, 14 Jan 2014 16:28:37 -0000

--- v2
+++ v3
@@ -1,10 +1,5 @@
 MPlotCurve is a subclass of QwtPlotCurve
-When you apply a subclass of QwtCurveFitter to a QwtPlotCurve you achieve a desirable specific fitting. However, the points, in cartesian coordinates, that describe the fitted curve are not readily available for use. Thus, if you want to compute the area below the curve or the centroid you must do additional work. Moreover, there is no ready way to visually compare the fitted with unfitted curve. The designer of Qwt carefully and rightfully designed QwtPlotCurve (as well as many other Qwt classes) to facilitate subclassing. The virtual functions and virtual destructor is testimony to this.
-MPlotCurve is an abstract class derive via multiple inheritance from QObject and QwtPlotCurve. Applications must subclass MPlotCurve and implement the pure virtual function rawData(). 
-Create a project and run it as follow: (a) As is (i.e. with certain code lines commented out); (b) Uncomment line 21 and run; (c) Uncomment line 28 and run; (d) Comment line 21, uncomment line 22 and run; ...get the picture... (e) Uncomment line 30 and 31 and run...setTranslate() receives, as argument, a QPointF that represents the absolute translation.
-Finally, uncomment line 33 and debug so as to look at the contents of the QPolygonF poly.
-Tested with Qt 5.1.1, Qwt 6.1.0.
-Note: The code needs to be revised for both execution and memory-use efficiency. In particular, unnecessary calls to replot() need scrubbing out.
-
+When you apply a subclass of QwtCurveFitter to a QwtPlotCurve you achieve a desirable specific fitting. However, the points, in cartesian coordinates, that describe the fitted curve are not readily available. Thus, if you want to compute the area below the curve or the centroid you must do additional work. Moreover, there is no ready way to visually compare the fitted with unfitted curve. MPlotCurve is derived from QwtPlotCurve. Applications are free to subclass MPlotCurve to achieve further specialization. 
+Create a project and run it. Use the items in the "Tool" menu to exercise the code. Your feedback is appreciated.
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Home modified by cah12

cah12 — Wed, 01 Jan 2014 09:01:17 -0000

--- v1
+++ v2
@@ -1,8 +1,10 @@
-Welcome to your wiki!
-
-This is the default page, edit it as you see fit. To add a new page simply reference it within brackets, e.g.: [SamplePage].
-
-The wiki uses [Markdown](/p/mplotcurve/wiki/markdown_syntax/) syntax.
+MPlotCurve is a subclass of QwtPlotCurve
+When you apply a subclass of QwtCurveFitter to a QwtPlotCurve you achieve a desirable specific fitting. However, the points, in cartesian coordinates, that describe the fitted curve are not readily available for use. Thus, if you want to compute the area below the curve or the centroid you must do additional work. Moreover, there is no ready way to visually compare the fitted with unfitted curve. The designer of Qwt carefully and rightfully designed QwtPlotCurve (as well as many other Qwt classes) to facilitate subclassing. The virtual functions and virtual destructor is testimony to this.
+MPlotCurve is an abstract class derive via multiple inheritance from QObject and QwtPlotCurve. Applications must subclass MPlotCurve and implement the pure virtual function rawData(). 
+Create a project and run it as follow: (a) As is (i.e. with certain code lines commented out); (b) Uncomment line 21 and run; (c) Uncomment line 28 and run; (d) Comment line 21, uncomment line 22 and run; ...get the picture... (e) Uncomment line 30 and 31 and run...setTranslate() receives, as argument, a QPointF that represents the absolute translation.
+Finally, uncomment line 33 and debug so as to look at the contents of the QPolygonF poly.
+Tested with Qt 5.1.1, Qwt 6.1.0.
+Note: The code needs to be revised for both execution and memory-use efficiency. In particular, unnecessary calls to replot() need scrubbing out.

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Discussion for Home page

cah12 — Tue, 31 Dec 2013 21:19:14 -0000

MPlotCurve

MPlotCurve is a subclass of QwtPlotCurve

When you apply a subclass of QwtCurveFitter to a QwtPlotCurve you achieve a desirable specific fitting. However, the points, in cartesian coordinates, that describe the fitted are no readily available for use. Thus, if you want to compute the area below the curve or the centroid you must do additional work. Moreover, there is no ready way to visually compare the fitted with unfitted curve. The designer of Qwt carefully and rightfully designed QwtPlotCurve (as well as many other Qwt classes) to facilitate subclassing. The virtual functions and virtual destructor is testimony to this.

MPlotCurve is an abstract class derive via multiple inheritance from QObject and QwtPlotCurve. Applications must subclass MPlotCurve and implement the pure virtual function rawData().

Create a project and run it as follow: (a) As is (i.e. with certain code lines commented out); (b) Uncomment line 21 and run; (c) Uncomment line 28 and run; (d) Comment line 21, uncomment line 22 and run; ...get the picture... (e) Uncomment line 30 and 31 and run...setTranslate() receives, as argument, a QPointF that represents the absolute translation.

Finally, uncomment line 33 and debug so as to look at the contents of the QPolygonF poly.

Tested with Qt 5.1.1, Qwt 6.1.0.

Note: The code needs to be revised for both execution and memory-use efficiency. In particular, unnecessary calls to replot() need scrubbing out.

Home modified by cah12

cah12 — Tue, 31 Dec 2013 20:27:48 -0000

Welcome to your wiki!

This is the default page, edit it as you see fit. To add a new page simply reference it within brackets, e.g.: [SamplePage].

The wiki uses Markdown syntax.

Project Members:

cah12 (admin)