Commit Graph

343 Commits

Author SHA1 Message Date
jkriege2
fdb8ce2d75 JKQTPlotter: REORGANIZED: separated line-graphs from jkqtpscatter.h/.cpp into jkqtplines.h/.cpp 2022-08-25 22:41:41 +02:00
jkriege2
a90cbecd9d added optimized line-drawing to JKQTPSpecialLineGraphBase 2022-08-25 22:33:07 +02:00
jkriege2
064f01d0b0 bugfixed optimized line-drawing 2022-08-25 22:32:34 +02:00
jkriege2
c3afee2c1f replaced QVector<QPointF> by QPolygonfF, as Qt changes from QVector to QList with Qt5->Qt6 2022-08-25 17:46:57 +02:00
jkriege2
586548c7d6 change parent-chld relationships of scatter graphs 2022-08-25 17:34:12 +02:00
jkriege2
f4c4a693e4 bugfix+docfix 2022-08-25 17:25:23 +02:00
jkriege2
c2338c07b1 bugfix 2022-08-25 16:53:44 +02:00
jkriege2
69adb3adfb bugfix 2022-08-25 15:30:39 +02:00
jkriege2
03031e3762 JKQTPlotter:
- NEW: improved plotting speed for line-graphs by a compression algorithm (see JKQTPGraphLinesCompressionMixin) that removes overlaying lines (e.g. in JKQTPXYLineGraph)
    - NEW: improved plotting speed for line-graphs by a clipping algorithm (applies to JKQTPXYLineGraph, JKQTPGraphErrorStyleMixin, JKQTPSpecialLineHorizontalGraph, JKQTPSpecialLineVerticalGraph and others)
    - NEW: improved plotting speed for scatter-graphs by not calling draw functions for symbols outside the plot window (e.g. in JKQTPXYLineGraph)
2022-08-25 15:17:50 +02:00
jkriege2
17b93ab580 improved speed example with more options 2022-08-23 22:12:53 +02:00
jkriege2
676b97a3ca fixed several CMakeLists.txt issues 2022-08-22 20:35:24 +02:00
jkriege2
8993b5ad8d CMake-System bugfix (in exports): added missing find_package(JKQTCommonStatisticsAndMath) 2022-08-22 16:38:30 +02:00
jkriege2
f83a3468b1 JKQTMathText:
- new options interface for JKQTMathText::parse()
  - breaking: removed JKQTMathtext::unparsedNode
  - several minor improvements
2022-08-13 19:43:39 +02:00
jkriege2
7d686f0c9a JKQTMathText:
- BREAKING/REWORKED: The \\verb!...!-command now works the same as in LaTeX
  - NEW: added support for \\begin{verbatim}...\\end{verbatim}, \\begin{verbatim*}...\\end{verbatim*}
2022-08-03 16:12:19 +02:00
jkriege2
f01a198b7b fixed several doxygen errors 2022-07-24 14:50:28 +02:00
jkriege2
c399959774 fixed several (pedantic) compiler warnings
fixed CMake problems
2022-07-23 16:05:13 +02:00
jkriege2
8558896f9b split jkqtcommon into basic tools and jkqtcommon_statistics_and_math for advanced math tools not used by all libs 2022-07-23 15:31:56 +02:00
jkriege2
e923a9de7b improved CMake scripts: better output, less warnings 2022-07-23 13:59:23 +02:00
jkriege2
ae3d3b479d better way to reuse PCH in examples, added CMake-Option to (de)activate PCH-usage 2022-07-22 21:44:16 +02:00
jkriege2
671e25b33b removed some compiler warnings and fixed construction problems 2022-07-22 16:24:24 +02:00
jkriege2
8b6e420c56 bugfix: added #define _USE_MATH_DEFINES needed for msvc to use M_PI, M_LN2... 2022-07-21 12:06:22 +02:00
jkriege2
25c55391ab NEW: Using precompiled headers in CMake-build to speed up build times 2022-07-20 22:31:42 +02:00
jkriege2
c2ddf8af37 improved documentation 2022-07-19 14:44:12 +02:00
jkriege2
74c2e3edf1 improved CMAKE Library Export script 2022-07-19 14:42:41 +02:00
jkriege2
5087970c79 updated copyright notice 2022-07-19 13:40:43 +02:00
jkriege2
ece49f2d2b FIXED issue #80: "Bug with multiple inheritance with Q_GDAGET with CLANG", thanks to user:igormironchik, caused by QTBUG-104874 2022-07-19 10:24:52 +02:00
jkriege2
d8c1524f61 partly solve issue #81 by making print-support optional. In addition it can be switched off with the CMake-option JKQtPlotter_BUILD_FORCE_NO_PRINTER_SUPPORT=ON 2022-07-18 23:33:20 +02:00
jkriege2
285814f2e6 fixed: JKQTMathText added a little whitespace before and after the LaTeX-string. This was removed as it disturbed the layout of text in plots 2022-06-02 23:24:41 +02:00
jkriege2
f33838f187 added debug-feature to show boxes around text in the plot 2022-06-02 23:05:58 +02:00
jkriege2
fd2ae94c6c got rid of deprecated warnings when compiling with Qt6 2022-06-02 21:44:58 +02:00
jkriege2
03497b6c31 changed JKQTPColorDerivationMode from an ENUM to a STRUCT, which extends its capabilities significantly 2022-06-02 21:21:17 +02:00
jkriege2
cf27b77b6b added JKQTMathTextFontSpecifier struct that describes a font and a math companion 2022-06-02 21:19:16 +02:00
jkriege2
5fae11472c added seaborn style 2022-05-23 22:44:58 +02:00
jkriege2
b756cb91e6 improved/fixed styling system: axis styles for colorbars were not properly taken from style objects + corrected some inaccurate drawing by using QRectF instead of QRect 2022-05-23 22:41:57 +02:00
jkriege2
667ffeb3f3 updated icons with high-dpi versions 2022-05-16 22:33:31 +02:00
jkriege2
fa02055b9d bugfixed string conversion method 2022-05-16 22:32:56 +02:00
jkriege2
145da4b191 improved icons: several style changes, all SVGs available, added high-dpi versions 2022-05-16 21:55:58 +02:00
jkriege2
ae5713ea68 implemented feature request #69: Show data tooltip on MouseMove by adding general actions that can be executed on a mouse move operation, when no mouse button is pressed, modification by keyboard modifiers is possible though 2022-05-15 14:15:15 +02:00
jkriege2
94f80510ec fixed issue described in PR #62: Fix custom labels draw, because giving exactly two label-strings did not display all of them, thanks to github_user:FalsinSoft 2022-05-14 22:59:10 +02:00
jkriege2
a80ea3a24a fixed issue #70: typo in lib/jkqtplotter/CMakeLists.txt 2022-05-13 10:45:20 +02:00
jkriege2
1a9593409a fixed QT6 compatibility 2022-05-12 10:35:05 +02:00
jkriege2
f475caddc1 fixed typo 2022-05-11 23:03:33 +02:00
jkriege2
ee2477a1f6 implemented wiggle plots (feature request #68) 2022-05-11 22:55:23 +02:00
jkriege2
d45083ee9b moved include-guards to the head of the headers 2022-04-24 22:07:39 +02:00
jkriege2
b8088ccc69 improved/bugfixed doxygen documentation 2022-04-24 13:23:59 +02:00
jkriege2
0a5fa42470 more required changes for Qt6 compatibility 2022-04-22 13:27:31 +02:00
jkriege2
6bcb0b9a9f Merge branch 'master' into add_qt6_compatibility 2022-04-21 21:28:49 +02:00
jkriege2
fbbc814331 using automatic memory management instead of local malloc()/free() pairs 2022-04-21 21:25:37 +02:00
jkriege2
b4eda85bfc fixed two possible int-overflows 2022-04-21 13:59:49 +02:00
jkriege2
a24ad0b597 fixed bug #49 : naming of sections in plot-styling INI-files 2022-04-21 13:51:50 +02:00
jkriege2
ad3a26a272 fixed bug #50 JKQtPlotter::clearAllRegisteredMouseDoubleClickActions(), JKQtPlotter::clearAllMouseWheelActions(), JKQtPlotter::clearAllRegisteredMouseDragActions() didn't really deactivate all actions 2022-04-21 13:33:22 +02:00
jkriege2
62adbd8036 Merge branch 'master' into add_qt6_compatibility 2022-04-21 12:15:15 +02:00
jkriege2
cc6a87c6d2 fixed bug #48 some users could not #include <QPrintPreviewWidget> 2022-04-21 12:13:23 +02:00
jkriege2
4ded1a2028 first round of Qt6 compatibility changes 2022-04-21 10:57:24 +02:00
jkriege2
8835febb96 modified CMakeLists.txt to match Qt6 2022-04-18 23:10:05 +02:00
jkriege2
052fc27cfb replaced some deprecated constructs for Qt 5.15 2022-04-18 22:45:02 +02:00
jkriege2
725d19d616 using Qt's dllexport/import-macros 2022-04-18 22:00:41 +02:00
jkriege2
d51d47b2f4 requiring higher cmake-version, due to CMP0076
using CMAKE_CURRENT_LIST_DIR instead of CMAKE_CURRENT_SOURCE_DIR
2022-04-18 22:00:31 +02:00
jkriege2
2697e66e31 CMakeLists.txt: using target_sources() and making CPP-files private! 2022-04-18 14:19:35 +02:00
Alan Morris
6f487c2c24 Enable high-dpi support for plots. 2021-08-18 16:32:48 -06:00
jkriege2
fc7622e901 several minor bugfixes to QMake build system 2020-10-19 16:05:18 +02:00
Patrick Stewart
2e85504d89 Support Qt in namespace 2020-10-02 14:41:26 +01:00
Patrick Stewart
29e970ed6f Use PROJECT_SOURCE_DIR instead of CMAKE_SOURCE_DIR
This means that the project can be used with CMake fetchcontent / add_subdriectory
2020-10-02 14:40:47 +01:00
jkriege2
75c7e3421b reworked grid-style representation 2020-09-29 13:19:04 +02:00
jkriege2
58403f8905 improved/breaking change: image plots now manage CONST-data, not plain pointer arrays... This is OK, since the raw data is never owned nor modified by the plot, only referenced! 2020-09-28 19:24:17 +02:00
jkriege2
48ec6060ab * additional JKQTPColorDerivationMode
* bugfixes for Boxplots
* style improvements
2020-09-28 15:37:45 +02:00
jkriege2
a371dc86a5 updated predefined styles to updated styling system 2020-09-28 12:46:58 +02:00
jkriege2
534745229d several bugfixes for reading styles, improved default styling for graphs (filled, barcharts, ...) 2020-09-27 17:16:18 +02:00
jkriege2
fc321f027b - breaking: geometric elements constructor: removed all styling properties, added setStyle()-functions to replace them. This is necessary to better work with the extended Styling system
- breaking: extended styling system for graphs
2020-09-26 15:58:58 +02:00
jkriege2
a65a713ea6 improved/breaking change: reworked class hierarchy of violin plots 2020-09-21 13:53:33 +02:00
jkriege2
0faa51c9f5 comment formatting fix 2020-09-21 13:52:13 +02:00
jkriege2
40e4b30c45 improved/breaking change: reworked class hierarchy of boxplots 2020-09-21 13:40:38 +02:00
jkriege2
f368855076 renamed JKQTPPlotObject->JKQTPGeometricPlotElement and added new base class JKQTPPlotAnnotationElement 2020-09-21 13:15:57 +02:00
jkriege2
f4767072a4 - improved/breaking change: reworked class hierarchy of range plot elements (JKQTPVerticalRange and JKQTPHorizontalRange)
- improved their documentation
2020-09-19 19:59:33 +02:00
jkriege2
9e48a2e59e improved/breaking change: reworked class hierarchy of filled line graphs 2020-09-19 19:17:35 +02:00
jkriege2
d638ff1e9c improved/breaking change: reworked class hierarchy of special line (step) graphs 2020-09-19 19:06:01 +02:00
jkriege2
abe1c655ba improved code (removed code repeats by using getIndexRange(), using const where appropriate) 2020-09-19 15:39:02 +02:00
jkriege2
7e425e7bb5 reworked class hierarchy of impulse graphs 2020-09-19 15:21:33 +02:00
jkriege2
d57da36a99 moved set/getBaseline() to a special base graph class JKQTPXYBaselineGraph 2020-09-19 15:08:32 +02:00
jkriege2
34fa59ebf4 using new JKQTPGraphLineAndFillStyleMixin where appropriate 2020-09-19 14:55:46 +02:00
jkriege2
6875e0ae6c - improved/breaking change: reworked class hierarchy of range charts.
- new: added JKQTPFilledHorizontalRangeGraph, complementing JKQTPFilledVerticalRangeGraph
2020-09-19 14:41:53 +02:00
jkriege2
8cee70bdca breaking: made more functions and function parameters const 2020-09-18 22:03:12 +02:00
jkriege2
3105d88740 added base graphs für X-Y-Y2- and X-X2-Y-datasets for X- and Y-Range plots 2020-09-18 19:35:53 +02:00
jkriege2
b112f9f512 breaking: in graph Base-Classes: promoted several setters to slots, added Q_PROPERTY- and Q_ENUM-declarations, Docu cleanup 2020-09-18 19:11:50 +02:00
jkriege2
eb9a1d5a92 documentation fixed 2020-09-18 12:24:12 +02:00
jkriege2
9dbfd6e173 reworked class hierarchy of bar charts 2020-09-17 16:59:57 +02:00
jkriege2
9a3f321f66 improved and bugfixed handling of aspectRatio and its documentation 2020-09-11 23:21:55 +02:00
jkriege2
d2b4e07c94 added JPQTPlotter signal, when widget was resized 2020-09-11 13:48:07 +02:00
jkriege2
d6e6b1d53b reverted: - bugfix: JKQTPColumnConstIterator and JKQTPColumnIterator: getImagePositionX() and getImagePositionY() were switched 2020-09-11 13:15:12 +02:00
jkriege2
a1c4f0c0d2 - added several new copy/set-functions to JKQTPDatastore
- bugfix: JKQTPColumnConstIterator and JKQTPColumnIterator: getImagePositionX() and getImagePositionY() were switched
2020-09-11 12:39:10 +02:00
jkriege2
ff373236d4 renamed JKQTPColorPaletteStyleAndToolsMixin::setPalette() -> JKQTPColorPaletteStyleAndToolsMixin::setColorPalette() 2020-09-11 12:14:51 +02:00
jkriege2
e9ca874f3b made some functions of JKQTPCoordinateAxis public and improved documentation 2020-09-11 12:09:11 +02:00
jkriege2
1162a80cb4 added missing JKQTPlotter::getDatastore() with const-modifier 2020-09-11 12:06:27 +02:00
jkriege2
ebf034710b bugfix: parsed functions did not work properly 2020-09-09 11:45:33 +02:00
jkriege2
ba856b594f removed/breaking change: removed the overlay elements (derived from JKQTPOverlayElement), which were not very well set up and are more confusing than useful. 2020-09-09 11:26:04 +02:00
jkriege2
95d885bc2c - bugfix: improved handling of DRAGZOOM-UserAction for log-log plots
- code (style) improvements
2020-09-08 20:15:33 +02:00
jkriege2
f77bc97ca5 - cleanup of class-hierarchy of evaluated functions
- added slots for several properties of evaluated functions
- updated examples
2020-09-07 20:58:20 +02:00
jkriege2
414e12920e - added further base-class JKQTPEvaluatedFunctionWithParamsGraphBase, which extends JKQTPEvaluatedFunctionGraphBase with parameters
- modified plot-function with parameters, as the old unsafe way of giving a void* for parameters is no longer necessary with C++-lambdas and std::bind()
2020-09-05 13:47:46 +02:00
jkriege2
dcdee469fe rename JKQTPFunctionLineGraphBase -> JKQTPEvaluatedFunctionGraphBase 2020-09-05 13:16:26 +02:00
jkriege2
29ee1aa376 created common base class JKQTPFunctionLineGraphBase for all graphs that display evaluated functions 2020-09-05 13:14:46 +02:00
jkriege2
48a24a85d0 JKQTPXFunctionLineGraph: further simplification 2020-09-05 12:50:46 +02:00
jkriege2
8c0c8bf62e simplification/unification: JKQTPXFunctionLineGraph and JKQTPYFunctionLineGraph now use JKQTPAdaptiveFunctionGraphEvaluator to generate sample points 2020-09-05 12:44:02 +02:00
jkriege2
c57c672f78 new: a new graph class JKQTPXYFunctionLineGraph draws parametric 2D curves (f(t) -> [x,y]) 2020-09-04 23:47:03 +02:00
jkriege2
33a9cb5b2d bugfix: straight lines in pie and chord were not drawn as curve in DrawMode=DrawAsMathematicalCurve 2020-09-03 23:28:48 +02:00
jkriege2
279ef7880a - improved: geometric objects now use an adaptive drawing algorithm to represent curves (before e.g. ellipses were always separated into a fixed number of line-segments)
- improved: constructors and access functions for several geometric objects (e.g. more constructors, additional functions to retrieve parameters in diferent forms, iterators for polygons, ...)
- new: all geometric objects can either be drawn as graphic element (i.e. lines are straight line, even on non-linear axes), or as mathematical curve (i.e. on non-linear axes, lines become the appropriate curve representing the linear function, connecting the given start/end-points). The only exceptions are ellipses (and the derived arcs,pies,chords), which are always drawn as mathematical curves
2020-09-03 23:08:52 +02:00
jkriege2
c02ebf817b added function to check whether axis is linear 2020-09-03 22:56:38 +02:00
jkriege2
87755ce515 diverse code improvements, increased copyright year to 2020 2020-08-26 12:58:23 +02:00
jkriege2
5ad9ebdcbb code styling improvements 2020-08-26 11:43:44 +02:00
jkriege2
696ce11514 improved code style 2020-08-26 11:00:25 +02:00
jkriege2
0a634aabd0 reorganization: split jkqtpgeometric.h/.cpp into several smaller files that group the geomtric shapes by type 2020-08-26 10:36:07 +02:00
jkriege2
4e1c09c24b improved arrows in geometric elements:
- JKQTPGeoLine, JKQTPGeoPolyLines and JKQTPGeoInfiniteLine support decorators
- improved decorator drawing
- more decorator types
- improved example geometry
- added specific example geo_arrows
- improved documentation
- code cleanup
2020-08-23 13:13:53 +02:00
jkriege2
b3f4c64564 added geometric plot JKQTPGeoArrow object to draw arrows 2020-08-21 18:31:58 +02:00
jkriege2
7e9bad29b4 fix for issue #45:
- for Qt 5.15: added missing #include statements that became necessary since Qt 5.15
- for Qt 5.15: fixed use of several deprecated functions
- for Qt 5.15/6: removed usage of QMatrix
2020-08-14 14:12:59 +02:00
jkriege2
eb7fd1d524 some bugfixes for VStudio NOMINMAX-problem ... 2020-06-29 08:01:40 +02:00
jkriege2
52d3349199 improvements in CMake setup:
- removed more global settings (these are now target-specific)
- exporting now Config.cmake, which contains find_package(Qt) and loads a separate Targets.cmake
2020-06-28 15:53:26 +02:00
jkriege2
04219ec6d9 fixed issue #37: installing README/LICENSE files now to $PREFIX/doc/JKQtPlotter, instead of $PREFIX/doc/ 2020-06-28 09:53:33 +02:00
Dan Timson
397c72049f bugfix for reading style names 2020-02-24 17:41:16 +00:00
Jan W. Krieger
ee4262d14c
Merge pull request #34 from certik/log_zero2
Skip drawing the line for negative values in log plots
2019-11-29 07:27:50 +01:00
Ondřej Čertík
65c23c9669 Use linesP and vec_linesP names 2019-11-28 20:34:29 -07:00
Ondřej Čertík
ae722e8c33 Use a vector of QPolygonF directly 2019-11-28 20:32:38 -07:00
Ondřej Čertík
10edc6b0ac Skip drawing the line for negative values 2019-11-26 13:40:05 -07:00
jkriege2
9a667b9c22 several compiler warnings fixed 2019-11-24 12:20:43 +01:00
jkriege2
56660e2f4b fixed several compiler warnings (mostly Visual Studio): clean-up of use of math constants M_PI ... and j0()/j1()/...-functions etc. 2019-11-24 10:42:44 +01:00
jkriege2
29b1c5aa37 solved link error with Visual Studio (upper/lower case mismatch in DEFINE was 'JKQtPlotter_LIB_...' but should be 'JKQTPLOTTER_LIB_...') 2019-11-24 10:42:23 +01:00
jkriege2
4c9db88a2e some more fixes do MSVC build 2019-11-21 21:42:10 +01:00
jkriege2
6d8139e996 add missing compiler flag 2019-11-21 08:01:17 +01:00
jkriege2
f3fa587541 reworked CMake build system ... now JKQT...Config.cmake-files are written into the correct directory 2019-11-18 15:59:06 +01:00
jkriege2
d494407e76 fixed some compiler warnings (qSort is deprecated ... using std::sort instead) 2019-11-18 13:08:42 +01:00
jkriege2
61d3108fb8 removed some unneeded debug-messages 2019-11-18 08:15:07 +01:00
jkriege2
57e8fb3362 added CImg interface (header-only) + examples
some corrections for OpenCV examples
2019-11-16 13:50:43 +01:00
jkriege2
e087f40870 documentation improvement for OpenCV + minor fixes 2019-11-16 11:35:59 +01:00
jkriege2
528f6fe537 - added post-build deploy for OpenCV and Qt-DLLs (on windows)
- checked OpenCV-examples and improved OpenCV-copy-tool (now copies as an image column, as appropriate!)
2019-11-10 15:35:07 +01:00
jkriege2
92c1851c8c bugfix: OpenCV-interface used hidden function 2019-10-17 23:49:50 +02:00
Mikael
abc32875f6 qt5.9 support 2019-10-17 11:32:23 +02:00
Dan Timson
24af63688b corrections to allow palettes to be drawn correctly 2019-09-16 18:09:17 +01:00
jkriege2
686fb1eeb1 using mix-in class JKQTPColorPaletteWithModifierStyleAndToolsMixin now also in JKQTPMathImage ... 2019-07-31 22:10:26 +02:00
jkriege2
4347d27c04 * reworked color-palette-system:
1. added several new (JKQTPMathImageBone, JKQTPMathImageCool, JKQTPMathImageCopper, JKQTPMathImageAutumn, JKQTPMathImageSeismic, JKQTPMathImageTerrain, JKQTPMathImageViridis, JKQTPMathImageMagma, JKQTPMathImageInferno, JKQTPMathImagePlasma)
  2. reworked LUT-types (now a QVector, instead of a C-array, suing malloc)
  3. reworked available functions to build LUTs (cleanup, more options, clearer names)
  4. added functions to load palettes from files
  5. Improved documentation
* added example for user-controlled color palettes
2019-07-28 16:30:50 +02:00
jkriege2
933d374533 + added license/readme output to INSTALL-target in CMake
+ added example demonstrating how to link against a CMake-build of JKQTPlotter
+ improved documentation
2019-06-22 16:42:42 +02:00
jkriege2
34b31812ba + bugfixed DLL-export when building shared libraries
+ CMAKE now properly adds the Build-type when building libraries
+ removed some more compiler warning
2019-06-22 14:21:32 +02:00
jkriege2
77d799a742 - removed many compiler warnings
- enabled compiler-warnings in CMake-build
- several bugfixes (also to appveyor.yml)
- removed some function from JKQTBasePlotter, which were (messy) shortcuts to adding graphs
2019-06-21 21:48:14 +02:00
jkriege2
fb5b497356 - several bugfixes (doc etz.)
- decoration of library names in CMake-builds
- renamed advancedlineandfillstyling to advplotstyling to solve problems with too long filenames
2019-06-21 13:44:49 +02:00
jkriege2
7311948d53 using CMake now to build examples
restructuring/massive renaming to make this possible
2019-06-20 22:24:47 +02:00
jkriege2
fae6b28a58 further reorganizations of code 2019-06-20 16:25:29 +02:00
jkriege2
60999478f8 added CMake build scripts for libraries + some necessary reorganizations 2019-06-20 15:18:58 +02:00
jkriege2
d9e9a5aa67 added adaptor functions for violin plots 2019-06-18 19:36:54 +02:00
jkriege2
f5abce1e6d added violin plots and an example demonstrating their usage/generation from random data 2019-06-16 19:19:52 +02:00
jkriege2
1363cf7012 added function to JKQTPPlotElement that allow to transform a complete vector of x- or y-values in one call 2019-06-16 19:15:07 +02:00
jkriege2
c8395f2ada JKQTPSingleColumnSymbolsGraph: added Rug-Plot 2019-06-16 13:27:40 +02:00
jkriege2
f96e262371 JKQTPlotter/JKQTBasePlotter: added functions to set properties of all grid lines (x+y axis) together 2019-06-16 13:27:02 +02:00
jkriege2
9e4210c823 JKQTPDatastore: added functions to check for existence of a column and to retreive the data of a column as a QVector<double> 2019-06-16 12:54:56 +02:00