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added example project for error indicator styles

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jkriege2 2018-12-02 11:38:27 +01:00
parent 97f8b48642
commit cdf76539b3
12 changed files with 277 additions and 31 deletions
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1
README.md
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@ -22,6 +22,7 @@ All test-projects are Qt-projects that use qmake to build. You can load them int
| [![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_logaxes_small.png)](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_logaxes) | [logarithmic axes](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_logaxes) | `JKQTPxyLineGraph` and `JKQTPgeoText`<br/>C++ vector of data<br/>logarithmic axes<br/>plot line styles<br/>internal LaTeX parser<br/>add commenting text to a graph |
| [![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_dateaxes_small.png)<br>![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_dateaxes_dates_small.png)<br>![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_dateaxes_timeaxis_small.png)](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_dateaxes) | [date/time axes](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_dateaxes) | `JKQTPxyLineGraph` and `JKQTPfilledVerticalRangeGraph`<br/>C++ vector of data<br/>date/time axes<br/>plot min/max range graph<br/>internal LaTeX parser<br/>data from CSV files |
| [![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_symbols_and_errors_small.png)](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_symbols_and_errors) | [Simple Line/Symbol Graph With Errorbars](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_symbols_and_errors) | `JKQTPxyLineErrorGraph`<br/>C-style arrays of data |
| [![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_errorbarstyles_small.png)](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_errorbarstyles) | [Different Types of Errorindicators](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_errorbarstyles) | `JKQTPxyLineErrorGraph`<br/>different styles of error indicators for x- and y-errors<br>C++-style QVector for data<br/>styling error indicators<br/>moving key and formatting plotter grid |
| [![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_barchart_small.png)](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_barchart) | [Simple Bar Charts](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_barchart) | `JKQTPbarVerticalGraph`<br/>C-style arrays of data |
| [![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/JKQTPbarVerticalGraphStacked_small.png)<br>![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/JKQTPbarHorizontalGraphStacked_small.png)](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_stackedbars) | [Stacked Bar Charts](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_stackedbars) | `JKQTPbarVerticalStackableGraph`, `JKQTPbarHorizontalStackableGraph`<br/>C++-style vectors of data |

8
lib/jkqtplotter/jkqtpbaseplotter.cpp
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@ -3158,13 +3158,13 @@ void JKQtBasePlotter::resetMasterSynchronization() {
size_t JKQtBasePlotter::addGraph(size_t xColumn, size_t yColumn, QString title, JKQTPgraphPlotstyle graphStyle) {
if (graphStyle==JKQTPimpulsesHorizontal) {
JKQTPimpulsesHorizontalGraph* gr=new JKQTPimpulsesHorizontalGraph(this);
JKQTPimpulsesVerticalGraph* gr=new JKQTPimpulsesVerticalGraph(this);
gr->set_title(title);
gr->set_xColumn(xColumn);
gr->set_yColumn(yColumn);
return addGraph(gr);
} else if (graphStyle==JKQTPimpulsesVertical) {
JKQTPimpulsesVerticalGraph* gr=new JKQTPimpulsesVerticalGraph(this);
JKQTPimpulsesHorizontalGraph* gr=new JKQTPimpulsesHorizontalGraph(this);
gr->set_title(title);
gr->set_xColumn(xColumn);
gr->set_yColumn(yColumn);
@ -3207,7 +3207,7 @@ size_t JKQtBasePlotter::addGraph(size_t xColumn, size_t yColumn, QString title,
size_t JKQtBasePlotter::addGraph(size_t xColumn, size_t yColumn, QString title, JKQTPgraphPlotstyle graphStyle, QColor color, JKQTPgraphSymbols symbol, Qt::PenStyle penstyle, double width) {
if (graphStyle==JKQTPimpulsesHorizontal) {
JKQTPimpulsesHorizontalGraph* gr=new JKQTPimpulsesHorizontalGraph(this);
JKQTPimpulsesVerticalGraph* gr=new JKQTPimpulsesVerticalGraph(this);
gr->set_title(title);
gr->set_xColumn(xColumn);
gr->set_yColumn(yColumn);
@ -3215,7 +3215,7 @@ size_t JKQtBasePlotter::addGraph(size_t xColumn, size_t yColumn, QString title,
gr->set_lineWidth(width);
return addGraph(gr);
} else if (graphStyle==JKQTPimpulsesVertical) {
JKQTPimpulsesVerticalGraph* gr=new JKQTPimpulsesVerticalGraph(this);
JKQTPimpulsesHorizontalGraph* gr=new JKQTPimpulsesHorizontalGraph(this);
gr->set_title(title);
gr->set_xColumn(xColumn);
gr->set_yColumn(yColumn);

34
lib/jkqtplotter/jkqtpelements.cpp
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@ -526,7 +526,7 @@ void JKQTPxyLineErrorGraph::drawErrorsBefore(JKQTPEnhancedPainter &painter)
JKQTPimpulsesHorizontalGraph::JKQTPimpulsesHorizontalGraph(JKQtBasePlotter* parent):
JKQTPimpulsesVerticalGraph::JKQTPimpulsesVerticalGraph(JKQtBasePlotter* parent):
JKQTPxyGraph(parent)
{
baseline=0;
@ -540,7 +540,7 @@ JKQTPimpulsesHorizontalGraph::JKQTPimpulsesHorizontalGraph(JKQtBasePlotter* pare
}
}
JKQTPimpulsesHorizontalGraph::JKQTPimpulsesHorizontalGraph(JKQtPlotter* parent):
JKQTPimpulsesVerticalGraph::JKQTPimpulsesVerticalGraph(JKQtPlotter* parent):
JKQTPxyGraph(parent)
{
baseline=0;
@ -553,9 +553,9 @@ JKQTPimpulsesHorizontalGraph::JKQTPimpulsesHorizontalGraph(JKQtPlotter* parent):
color=parent->getPlotStyle(parentPlotStyle).color();
}
}
void JKQTPimpulsesHorizontalGraph::draw(JKQTPEnhancedPainter& painter) {
void JKQTPimpulsesVerticalGraph::draw(JKQTPEnhancedPainter& painter) {
#ifdef JKQTBP_AUTOTIMER
JKQTPAutoOutputTimer jkaaot("JKQTPimpulsesHorizontalGraph::draw");
JKQTPAutoOutputTimer jkaaot("JKQTPimpulsesVerticalGraph::draw");
#endif
if (parent==nullptr) return;
JKQTPdatastore* datastore=parent->getDatastore();
@ -627,7 +627,7 @@ void JKQTPimpulsesHorizontalGraph::draw(JKQTPEnhancedPainter& painter) {
drawErrorsAfter(painter);
}
void JKQTPimpulsesHorizontalGraph::drawKeyMarker(JKQTPEnhancedPainter& painter, QRectF& rect) {
void JKQTPimpulsesVerticalGraph::drawKeyMarker(JKQTPEnhancedPainter& painter, QRectF& rect) {
painter.save();
@ -642,7 +642,7 @@ void JKQTPimpulsesHorizontalGraph::drawKeyMarker(JKQTPEnhancedPainter& painter,
painter.restore();
}
QColor JKQTPimpulsesHorizontalGraph::getKeyLabelColor() {
QColor JKQTPimpulsesVerticalGraph::getKeyLabelColor() {
return color;
}
@ -656,20 +656,20 @@ QColor JKQTPimpulsesHorizontalGraph::getKeyLabelColor() {
JKQTPimpulsesVerticalGraph::JKQTPimpulsesVerticalGraph(JKQtBasePlotter* parent):
JKQTPimpulsesHorizontalGraph(parent)
JKQTPimpulsesHorizontalGraph::JKQTPimpulsesHorizontalGraph(JKQtBasePlotter* parent):
JKQTPimpulsesVerticalGraph(parent)
{
}
JKQTPimpulsesVerticalGraph::JKQTPimpulsesVerticalGraph(JKQtPlotter *parent):
JKQTPimpulsesHorizontalGraph(parent)
JKQTPimpulsesHorizontalGraph::JKQTPimpulsesHorizontalGraph(JKQtPlotter *parent):
JKQTPimpulsesVerticalGraph(parent)
{
}
void JKQTPimpulsesVerticalGraph::draw(JKQTPEnhancedPainter& painter) {
void JKQTPimpulsesHorizontalGraph::draw(JKQTPEnhancedPainter& painter) {
#ifdef JKQTBP_AUTOTIMER
JKQTPAutoOutputTimer jkaaot("JKQTPimpulsesVerticalGraph::draw");
JKQTPAutoOutputTimer jkaaot("JKQTPimpulsesHorizontalGraph::draw");
#endif
if (parent==nullptr) return;
JKQTPdatastore* datastore=parent->getDatastore();
@ -1805,7 +1805,7 @@ QBrush JKQTPxyLineGraph::getBrush(JKQTPEnhancedPainter& /*painter*/) const {
}
QPen JKQTPimpulsesHorizontalGraph::getPen(JKQTPEnhancedPainter& painter) const {
QPen JKQTPimpulsesVerticalGraph::getPen(JKQTPEnhancedPainter& painter) const {
QPen p;
p.setColor(color);
p.setWidthF(qMax(JKQTPLOTTER_ABS_MIN_LINEWIDTH,parent->pt2px(painter, parent->get_lineWidthMultiplier()*lineWidth)));
@ -1870,7 +1870,7 @@ QPen JKQTPhorizontalRange::getLinePen(JKQTPEnhancedPainter& painter) const {
bool JKQTPimpulsesHorizontalErrorGraph::usesColumn(int c)
{
return JKQTPimpulsesHorizontalGraph::usesColumn(c)|| JKQTPxGraphErrors::errorUsesColumn(c);
return JKQTPimpulsesVerticalGraph::usesColumn(c)|| JKQTPxGraphErrors::errorUsesColumn(c);
}
void JKQTPimpulsesHorizontalErrorGraph::drawErrorsAfter(JKQTPEnhancedPainter &painter)
@ -1880,20 +1880,20 @@ void JKQTPimpulsesHorizontalErrorGraph::drawErrorsAfter(JKQTPEnhancedPainter &pa
}
JKQTPimpulsesVerticalErrorGraph::JKQTPimpulsesVerticalErrorGraph(JKQtBasePlotter *parent):
JKQTPimpulsesVerticalGraph(parent), JKQTPyGraphErrors()
JKQTPimpulsesHorizontalGraph(parent), JKQTPyGraphErrors()
{
setErrorColorFromGraphColor(color);
}
JKQTPimpulsesVerticalErrorGraph::JKQTPimpulsesVerticalErrorGraph(JKQtPlotter *parent):
JKQTPimpulsesVerticalGraph(parent), JKQTPyGraphErrors()
JKQTPimpulsesHorizontalGraph(parent), JKQTPyGraphErrors()
{
setErrorColorFromGraphColor(color);
}
bool JKQTPimpulsesVerticalErrorGraph::usesColumn(int c)
{
return JKQTPimpulsesVerticalGraph::usesColumn(c)|| JKQTPyGraphErrors::errorUsesColumn(c);
return JKQTPimpulsesHorizontalGraph::usesColumn(c)|| JKQTPyGraphErrors::errorUsesColumn(c);
}
void JKQTPimpulsesVerticalErrorGraph::drawErrorsAfter(JKQTPEnhancedPainter &painter)

20
lib/jkqtplotter/jkqtpelements.h
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@ -360,13 +360,13 @@ class LIB_EXPORT JKQTPxyParametrizedErrorScatterGraph: public JKQTPxyParametrize
\image html plot_impulsesxplots.png
*/
class LIB_EXPORT JKQTPimpulsesHorizontalGraph: public JKQTPxyGraph {
class LIB_EXPORT JKQTPimpulsesVerticalGraph: public JKQTPxyGraph {
Q_OBJECT
public:
/** \brief class constructor */
JKQTPimpulsesHorizontalGraph(JKQtBasePlotter* parent=nullptr);
JKQTPimpulsesVerticalGraph(JKQtBasePlotter* parent=nullptr);
/** \brief class constructor */
JKQTPimpulsesHorizontalGraph(JKQtPlotter* parent);
JKQTPimpulsesVerticalGraph(JKQtPlotter* parent);
/** \brief plots the graph to the plotter object specified as parent */
virtual void draw(JKQTPEnhancedPainter& painter);
@ -401,17 +401,17 @@ class LIB_EXPORT JKQTPimpulsesHorizontalGraph: public JKQTPxyGraph {
\image html plot_impulsesxerrorsplots.png
*/
class LIB_EXPORT JKQTPimpulsesHorizontalErrorGraph: public JKQTPimpulsesHorizontalGraph, public JKQTPxGraphErrors {
class LIB_EXPORT JKQTPimpulsesHorizontalErrorGraph: public JKQTPimpulsesVerticalGraph, public JKQTPxGraphErrors {
Q_OBJECT
public:
/** \brief class constructor */
inline JKQTPimpulsesHorizontalErrorGraph(JKQtBasePlotter* parent=nullptr):
JKQTPimpulsesHorizontalGraph(parent), JKQTPxGraphErrors()
JKQTPimpulsesVerticalGraph(parent), JKQTPxGraphErrors()
{
setErrorColorFromGraphColor(color);
}
inline JKQTPimpulsesHorizontalErrorGraph(JKQtPlotter* parent):
JKQTPimpulsesHorizontalGraph(parent), JKQTPxGraphErrors()
JKQTPimpulsesVerticalGraph(parent), JKQTPxGraphErrors()
{
setErrorColorFromGraphColor(color);
}
@ -432,13 +432,13 @@ class LIB_EXPORT JKQTPimpulsesHorizontalErrorGraph: public JKQTPimpulsesHorizont
\image html plot_impulsesyplots.png
*/
class LIB_EXPORT JKQTPimpulsesVerticalGraph: public JKQTPimpulsesHorizontalGraph {
class LIB_EXPORT JKQTPimpulsesHorizontalGraph: public JKQTPimpulsesVerticalGraph {
Q_OBJECT
public:
/** \brief class constructor */
JKQTPimpulsesVerticalGraph(JKQtBasePlotter* parent=nullptr);
JKQTPimpulsesHorizontalGraph(JKQtBasePlotter* parent=nullptr);
/** \brief class constructor */
JKQTPimpulsesVerticalGraph(JKQtPlotter* parent);
JKQTPimpulsesHorizontalGraph(JKQtPlotter* parent);
/** \brief plots the graph to the plotter object specified as parent */
virtual void draw(JKQTPEnhancedPainter& painter);
@ -451,7 +451,7 @@ class LIB_EXPORT JKQTPimpulsesVerticalGraph: public JKQTPimpulsesHorizontalGraph
\image html plot_impulsesyerrorsplots.png
*/
class LIB_EXPORT JKQTPimpulsesVerticalErrorGraph: public JKQTPimpulsesVerticalGraph, public JKQTPyGraphErrors {
class LIB_EXPORT JKQTPimpulsesVerticalErrorGraph: public JKQTPimpulsesHorizontalGraph, public JKQTPyGraphErrors {
Q_OBJECT
public:
/** \brief class constructor */

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test/jkqtplotter_simpletest_errorbarstyles/README.md Normal file
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@ -0,0 +1,120 @@
[Back to JKQTPlotter main page](https://github.com/jkriege2/JKQtPlotter/)
# JKQtPlotter
## Different Types of Errorindicators
This project (see `./test/jkqtplotter_simpletest_errorbarstyles/`) simply creates a JKQtPlotter widget (as a new window) and adds several curves show-casing different styles of error indicators. Data is initialized from two QVector<double> objects.
The source code of the main application can be found in [`jkqtplotter_simpletest_errorbarstyles.cpp`](https://github.com/jkriege2/JKQtPlotter/blob/master/test/jkqtplotter_simpletest_errorbarstyles/jkqtplotter_simpletest_errorbarstyles.cpp).
First some data is added to the internal datastore (mostly, like explained in several other examples, like e.g. [Line Graph with Different Symbols and Line Styles](https://github.com/jkriege2/JKQtPlotter/tree/master/test/jkqtplotter_simpletest_symbols_and_styles)). The (in a loop) several graphs are added, each with a distinct style for its error indicators:
```c++
// 3. now we make several plots with different error styles
// for that we iterate over every style from the vector errorStyles
// the array showXandYError indicates whether we want x- and y-error
// for a style for all stywhere this is false, only y-error-indicators
// are shown
QVector<JKQTPerrorPlotstyle> errorStyles {JKQTPnoError, JKQTPerrorBars, JKQTPerrorSimpleBars, JKQTPerrorLines, JKQTPerrorPolygons, JKQTPerrorBoxes, JKQTPerrorEllipses, JKQTPerrorBarsPolygons, JKQTPerrorBarsLines, JKQTPerrorSimpleBarsLines, JKQTPerrorSimpleBarsPolygons };
QVector<bool> showXandYError { false , true , true , false , false , true , true , false , false , false , false };
for (int errorID=0; errorID<errorStyles.size(); errorID++) {
// generate some plot data
QVector<double> Y;
for (auto& xx: X) {
Y<<xx*0.5+static_cast<double>(errorID)*2.5;
}
// create a graph object
JKQTPxyLineErrorGraph* graph=new JKQTPxyLineErrorGraph(&plot);
// copy data into datastore and immediately set the yColumn
graph->set_xColumn(columnX);
graph->set_yColumn(ds->addCopiedColumn(Y, "y"+QString::number(errorID)));
graph->set_xErrorColumn(columnXError);
graph->set_yErrorColumn(columnYError);
// set error style, for the y-axis
graph->set_yErrorStyle(errorStyles[errorID]);
// no error indicators for the x-values
graph->set_xErrorStyle(JKQTPnoError);
// ... unless: for some error styles we want error in both directions
if (showXandYError[errorID]) {
graph->set_xErrorStyle(errorStyles[errorID]);
graph->set_drawLine(false);
}
// make error indicator 30% transparent
QColor c=graph->get_errorFillColor();
c.setAlphaF(0.3);
graph->set_errorFillColor(c);
// set error indicator line width
graph->set_errorWidth(1);
// set length of small bars at the end of error bars
graph->set_errorbarSize(15);
// set symbol (cross/X) + pen style (and color)dashed)
graph->set_symbol(JKQTPcross);
graph->set_style(Qt::DashLine);
// set symbol size
graph->set_symbolSize(5);
// set width of symbol lines
graph->set_symbolWidth(1);
// set width of graph line
graph->set_lineWidth(1);
// graph title is made from symbol+errorStylestyle, we use the LaTeX instruction \verb around the
// result of JKQTPerrorPlotstyle2String(), because it contains underscores that would otherwise
// lead to lower-case letter, which we don't want
graph->set_title("\\verb{"+JKQTPerrorPlotstyle2String(errorStyles[errorID])+"}");
// add the graph to the plot, so it is actually displayed
plot.addGraph(graph);
}
```
The error styles are set in these lines:
```c++
// set error style, for the y-axis
graph->set_yErrorStyle(errorStyles[errorID]);
// no error indicators for the x-values
graph->set_xErrorStyle(errorStyles[errorID]);
```
There are several variables that can be used to further style the error indicator, like:
```c++
// make error indicator 30% transparent
QColor c=graph->get_errorFillColor();
c.setAlphaF(0.3);
graph->set_errorFillColor(c);
// set error indicator line width
graph->set_errorWidth(1);
// set length of small bars at the end of error bars
graph->set_errorbarSize(15);
```
There are more properties that you can find in the documentation of the mix-in classes `JKQTPxyGraphErrors`, `JKQTPxGraphErrors`, `JKQTPyGraphErrors`, `JKQTPgraphErrors`.
In addition the plot key is moved outside the pot and the grid in the plot is switched off:
```c++
// 6. change locaion of key (outside top-right)
plot.get_plotter()->set_keyPosition(JKQTPkeyOutsideRightTop);
// ... and switch off the grid
plot.getXAxis()->set_drawGrid(false);
plot.getXAxis()->set_drawMinorGrid(false);
plot.getYAxis()->set_drawGrid(false);
plot.getYAxis()->set_drawMinorGrid(false);
```
The result looks like this:
![jkqtplotter_simpletest_errorbarstyles](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_errorbarstyles.png)
Error bars are implemented in the mixin-classes `JKQTPxyGraphErrors`, `JKQTPxGraphErrors` and `JKQTPyGraphErrors` that are all derived from `JKQTPgraphErrors`. With these it is simple to add error indicators to several different plot styles. Usually you can recognize these by looking at the class name, e.g. `JKQTPxyLineGraph` is a simple line+symbol graph, and `JKQTPxyLineErrorGraph` is the same with error indictaors (see above). There are also several other plots with error indicators:
- `JKQTPbarVerticalErrorGraph` for barcharts with errors:<br>![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_errorbarstyles_barcharts.png)
- `JKQTPimpulsesVerticalGraph` for impulse/candle-stick charts with errors:<br>![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_errorbarstyles_impulses.png)
- `JKQTPfilledCurveXErrorGraph` for filled curves with errors:<br>![](https://raw.githubusercontent.com/jkriege2/JKQtPlotter/master/screenshots/jkqtplotter_simpletest_errorbarstyles_filledcurves.png)
.
[Back to JKQTPlotter main page](https://github.com/jkriege2/JKQtPlotter/)

109
test/jkqtplotter_simpletest_errorbarstyles/jkqtplotter_simpletest_errorbarstyles.cpp Normal file
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@ -0,0 +1,109 @@
#include <QApplication>
#include "jkqtplotter/jkqtplotter.h"
#include "jkqtplottertools/jkqtptools.h"
int main(int argc, char* argv[])
{
QApplication app(argc, argv);
// 1. create a plotter window and get a pointer to the internal datastore (for convenience)
JKQtPlotter plot;
JKQTPdatastore* ds=plot.getDatastore();
// 2. now we create data a vector of x-values for a simple plot
// and generate some values for varying errors
// y-data for the pot will be generated later to position the
// plot at different locations.
QVector<double> X, Yerror, Xerror;
const int Ndata=7; // number of plot points in each curve
for (int i=0; i<Ndata; i++) {
const double x=10.0+double(i)*2.0;
X<<x;
Yerror<<0.35+0.3*sin(x);
Xerror<<0.35+0.3*sin(x);
}
// and copy it to the datastore
size_t columnX=ds->addCopiedColumn(X, "x");
size_t columnXError=ds->addCopiedColumn(Xerror, "xerror");
size_t columnYError=ds->addCopiedColumn(Yerror, "yerror");
// 3. now we make several plots with different error styles
// for that we iterate over every style from the vector errorStyles
// the array showXandYError indicates whether we want x- and y-error
// for a style for all stywhere this is false, only y-error-indicators
// are shown
QVector<JKQTPerrorPlotstyle> errorStyles {JKQTPnoError, JKQTPerrorBars, JKQTPerrorSimpleBars, JKQTPerrorLines, JKQTPerrorPolygons, JKQTPerrorBoxes, JKQTPerrorEllipses, JKQTPerrorBarsPolygons, JKQTPerrorBarsLines, JKQTPerrorSimpleBarsLines, JKQTPerrorSimpleBarsPolygons };
QVector<bool> showXandYError { false , true , true , false , false , true , true , false , false , false , false };
for (int errorID=0; errorID<errorStyles.size(); errorID++) {
// generate some plot data
QVector<double> Y;
for (auto& xx: X) {
Y<<xx*0.5+static_cast<double>(errorID)*2.5;
}
JKQTPxyLineErrorGraph* graph=new JKQTPxyLineErrorGraph(&plot);
// copy data into datastore and immediately set the yColumn
graph->set_xColumn(columnX);
graph->set_yColumn(ds->addCopiedColumn(Y, "y"+QString::number(errorID)));
graph->set_xErrorColumn(columnXError);
graph->set_yErrorColumn(columnYError);
// set error style, for the y-axis
graph->set_yErrorStyle(errorStyles[errorID]);
// no error indicators for the x-values
graph->set_xErrorStyle(JKQTPnoError);
// ... unless: for some error styles we want error in both directions
if (showXandYError[errorID]) {
graph->set_xErrorStyle(errorStyles[errorID]);
graph->set_drawLine(false);
}
// make error indicator 30% transparent
QColor c=graph->get_errorFillColor();
c.setAlphaF(0.3);
graph->set_errorFillColor(c);
// set error indicator line width
graph->set_errorWidth(1);
// set length of small bars at the end of error bars
graph->set_errorbarSize(15);
// set symbol (cross/X) + pen style (and color)dashed)
graph->set_symbol(JKQTPcross);
graph->set_style(Qt::DashLine);
// set symbol size
graph->set_symbolSize(5);
// set width of symbol lines
graph->set_symbolWidth(1);
// set width of graph line
graph->set_lineWidth(1);
// graph title is made from symbol+errorStylestyle, we use the LaTeX instruction \verb around the
// result of JKQTPerrorPlotstyle2String(), because it contains underscores that would otherwise
// lead to lower-case letter, which we don't want
graph->set_title("\\verb{"+JKQTPerrorPlotstyle2String(errorStyles[errorID])+"}");
// add the graph to the plot, so it is actually displayed
plot.addGraph(graph);
}
// 4. autoscale the plot so the graph is contained
plot.zoomToFit();
// 6. change locaion of key (outside top-right)
plot.get_plotter()->set_keyPosition(JKQTPkeyOutsideRightTop);
// ... and switch off the grid
plot.getXAxis()->set_drawGrid(false);
plot.getXAxis()->set_drawMinorGrid(false);
plot.getYAxis()->set_drawGrid(false);
plot.getYAxis()->set_drawMinorGrid(false);
// 7. show plotter and make it a decent size
plot.show();
plot.resize(800,600);
return app.exec();
}

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test/jkqtplotter_simpletest_errorbarstyles/jkqtplotter_simpletest_errorbarstyles.pro Normal file
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# source code for this simple demo
SOURCES = jkqtplotter_simpletest_errorbarstyles.cpp
# configure Qt
CONFIG += qt
QT += core gui svg
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets printsupport
# output executable name
TARGET = jkqtplotter_simpletest_errorbarstyles
# include JKQtPlotter source code
include(../../lib/jkqtplotter.pri)
# here you can activate some debug options
#DEFINES += SHOW_JKQTPLOTTER_DEBUG
#DEFINES += JKQTBP_AUTOTIMER