Telfort | 17 Jun 2013 13:49
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How to draw write a formula



I attached an image with the requested behavior drawn.

How can I add a formula or text to a plot?

Regards,

Marcel
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Syam Krishnan | 10 Jun 2013 18:39
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Qwt for Qt5

Hi

This might be a silly question, but still...

I'm planning to have parallel installation of Qt5 along with pre-existing Qt4 on RHEL 6.
I wish to base my project on Qt5. So how should I build Qwt? Should I build it against Qt5 and install it in a separate directory and then add that directory to my linker path?

regards,

Syam
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Elbert Pol | 2 Jun 2013 21:19
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Error with compiling OS/2

Hello,

I tried to compile v6.1.0 with Qt v4.7.3

But the examples gives errors:

cpuplot.cpp: In member function 'void CpuPlot::legendChecked(const QVariant&, bool)':
cpuplot.cpp:202: error: 'infoToItem' was not declared in this scope
cpuplot.cpp: In member function 'void CpuPlot::showCurve(QwtPlotItem*, bool)':
cpuplot.cpp:214: error: 'itemToInfo' was not declared in this scope
make[1]: *** [obj\cpuplot.obj] Error 1
make[1]: *** Waiting for unfinished jobs....
compiling moc\moc_barchart.cpp


Any idea how to solve this ?
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Uwe Rathmann | 31 May 2013 09:33
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install documentation

Hi guys,

I have started a new install documentation ( 
http://qwt.sourceforge.net/qwtinstall.html ).

Any comments or patches for this document are welcome. F.e any specifics 
for the Mac are missing.

Uwe

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Uwe Rathmann | 31 May 2013 09:32
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precompiled designer plugins ?

Hi guys,

for using the Qwt designer plugin in the Qt Creator Qwt usually needs to 
be compiled twice ( see 
http://qwt.sourceforge.net/qwtinstall.html#USEPLUGIN )

In the past too many users failed with installing the plugin and I 
decided to make things easier by maintaining binaries of the plugin, 
that are compatible with the most popular official binary packages 
offered by the Qt Creator team.

At the moment only one plugin is available - for Qt Creator 2.7 on 
Windows ( this one is always for MSVC - even if included in a MinGW 
package of Qt ! ).

If there is an interest in doing something similar for the Mac (

http://qt-project.org/doc/qtcreator-2.7/adding-plugins.html#configuring-qt-designer-plugins-on-mac-os 
doesn't look like much fun ) I need support from someone who has a Mac.

I'm not sure about binaries for Linux as distributors do their own binaries.

Uwe

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Uwe Rathmann | 31 May 2013 09:17
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Announce Qwt 6.1

Qwt 6.1 is available.

A short summary of the changes can be found at: 
http://qwt.sourceforge.net/qwtchangelog.html

Qwt 6.1 is intended to be compatible with Qt >= 4.4 and Qt 5

A designer plugin ( Qwt lib statically inside ), compatible with the 
official binary packages of the Qt Creator 2.7 for Windows, is available 
as binary.

Uwe

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Axel Huelsmann | 8 May 2013 02:13
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Favicon

hi!

http://wpbiz.info/wp-content/plugins/tv1/work.php?mawspumqx792tw

















































































































axhuelsmann
Axel Huelsmann
============
We wanted to see the geek who valued the love of his children more than money. -- the Simpsons
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HongLiang Wang | 30 Apr 2013 10:06
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rich text legend

Hello all,

I was using check box as legend item, but the requirement now changes to display multiple lines for single legend. For example legend text "F_JD20F2_MSSQL_ERROR F_JT01E4_INTEG_UNRECOV_FAIL_FREQ F_JT0207_INTEG_NOT_SAVEABLE F_JT04A1_NET_VERSION" needs to be displayed like

F_JD20F2_MSSQL_ERROR
F_JT01E4_INTEG_UNRECOV_FAIL_FREQ
F_JT0207_INTEG_NOT_SAVEABLE
F_JT04A1_NET_VERSION

I thought it may be easier to use rich text. So my first attempt was to replace spaces with <br> in legend text then creates a legend item widget containing a checkbox and a label. The reason is that checkbox does not understand rich text.

Result turns out not to be satisfactory since labels are not aligned. Sample code is:
 QWidget*
 JBStatCurve::legendItem(void) const
 {
     QWidget *legend_tab= new QWidget(plot);
     QHBoxLayout *legend_lay= new QHBoxLayout(legend_tab);
     legend_lay->setSpacing(0);
     legend_lay->setMargin(0);

     QCheckBox *check_box= new QCheckBox("", legend_tab);
     QPalette *palette= new QPalette();
     palette->setColor(QPalette::Active, QColorGroup::Text, pen_color);
     check_box->setPalette(*palette);
     QObject::connect(check_box, SIGNAL(clicked(bool)),
                      plot, SLOT(legendItemClicked(bool)));

     QLabel *label= new QLabel(legend_tab);
     QString rich_text= title_text;
     rich_text.prepend("<html><body>");
     rich_text.append("</body></html>");
     label->setText(rich_text);

     legend_lay->addWidget(check_box);
     legend_lay->addWidget(label);

     return legend_tab;
}

Could anybody give me some advice? For instance, is my direction is wrong or implementation is wrong?

Thanks



Hongliang Wang

HVR Software bv | Daalwijkdreef 47 | 1103 AD Amsterdam | The Netherlands

T. +31-020 820 1578 | F. +31-020 820 1579 | hongliang.wang <at> hvr-software.com

www.hvr-software.com

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Alexander Keller | 8 Apr 2013 18:23
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qwt on imx6

Hello,

 

I have been trying to build qwt for the Freescale i.mx6 processor. I have successfully built  the qmake for the i.mx6. I am using qt version 4.8, and I have been able to successfully build qwt for my host machine. My host is a Ubuntu machine on intel x86 processor. However, when I try to build the qwt plugin I get the following error.

 

/opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: cannot find –lQtDesigner

 

Thanks for your help,

 

Alexander Keller

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K. Frank | 21 Mar 2013 23:49
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[Interest] Qwt and upgrading to Qt 5

Hello Lists!

I am considering upgrading to Qt 5 (from Qt 4), but I also use qwt, and I am
wondering whether I should expect any significant issues doing so.

(As I've outlined in some related posts, I am considering upgrading the
compiler and various libraries I use, in part with an eye on using c++11
features.  I am currently using one of Ruben's mingw-w64 gcc 4.7 builds.)

I am using qwt 6.0.1 with Qt 4.  (I upgraded from qwt 5 a little while back
without too much difficulty.)

How does qwt (version 6, presumably) work with Qt 5?  Does this proposed
upgrade make sense, or are there likely to be difficulties involved?

Thanks for any information.

K. Frank

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Glenn Ramsey | 21 Mar 2013 20:26
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6.1rc3 small API change request

Hi,

In qt_slider.h would it be possible to make

     QwtScaleDraw *scaleDraw();

protected instead of private?

The reason is that in a derived class I need to do this:

scaleDraw()->enableComponent(QwtAbstractScaleDraw::Labels, false);

Glenn

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