• Add bitmap background support for graph objects.  Includes a new graph style library with several bitmap styles.
• Added an additional folder during installation called "NTSystem".  This folder contain one file called msimg32.dll.  If you are running Turbo Grapher under Windows NT 4, and you keep getting and error like: file not found "tgutil.dll", then copy the msimg32.dll file to your WINNT\System32 folder. Do not use this file under any other operating system.

• Fixed some minor object line thickness and arrow size scaling issues which appeared on printed output.
• Added the ability to import icon files (*.ICO).
• Added two additional anchor positions for ARROW objects.
• Additional changes to the user interface.

• Added comprehensive support for JPEG images.
• Users can now export a single object, group of objects or the entire project to a BMP or JPEG file.  The menu image map on this web page was created with Turbo Grapher.

• Fixed some subtle memory leaks in the graph engine which would cause the Quick Calc dialog to use up all system GDI resources. This would only occur if you selected a calculation range via the mouse in the Quick Calc graph window.
• Tweeked the graph axis format routines to fix some minor bugs.
• Changes to the user interface (dialog appearance).  Switching over to "flat-style" buttons.  Adding tool tips, etc.  This will be an ongoing process.
• Drastically increased the loading speed of the program by improving the initial font polling routine.

• Added feature to manage temporary statistic and graphic files.
• Improved the bitmap object functions.
• Fixed bug with embedding bitmap images.
• Added Combine Graph function.
• Enhancements to interface dialogs.
• Provided Turbo Grapher with a new installer package.
• Enhanced registry support.
• Updates to help file.
• Ability to export temporary statistic files to specified location.
• Improved metafile importing.
• Created file dialog for importing image.  This dialog has a preview window.
• Added graph style library.
• Improved Legend object so they automatically update when graph attributes change.

Sorry for the delay in this release.  Life's duty calls.  This release includes some major internal restructuring to the software, while the GUI is about the same.

• Redesigned the Unit Conversion Utility to be more useful.  You can now input formulas to calculate conversion factors.  You can basically input any function.
• Redesigned the formula calculation engine.
• Fixed bugs in the Cubic Spline Graph and Segmented Polynomial Graph.
• Added dialog to search for license files, so registering the software is easier.
• Redesigned statistic handling.  All stat calculations are saved to a temporary file, so large statistical displays are maintained.
• Added additional features to the Preferenced dialog.
• Tweeks to printer  setup.
• Dozens of other changes and fixes. (I don't even remember them all anymore!)

  Sorry,  current users of the software must uninstall their current version before installing this release.

• Enhanced the Intersection calculation alogorithm to find intersection points more accurately.
• Added additional features to the graph data grid: intersection calculator, reverse data option, function to create quick plot series and more.
• Added ability to import/export Data Interchange Format (DIF) files.
• Added refinements to object selection.
• Updated the HTML help file
• Please note that people who have Turbo Grapher previously installed on their computer will need to uninstall their current version and reinstall the latest full version in order for the update to run.

• Increased the data grid size for graphs. You can now store upto 29 columns by 2999 data points in each graph. This calculates to 86971 double precision values or approximately 720k worth of data.
• Added a data compression algorithm which dramatically reduces the size of TG2 files. Particularly those with few data points.
• Fixed an bug with the data import feature which caused the program to crash with while importing certain text data formats.
• Added a gradient feature to the legend background and progress bar.
• Tweeks to the data grid behavior. Fixed problem with calculating data values when more than 32,000 data points were selected.
• Enhanced the "Create Graph from Formula" option to allow use of equations in the library.
• Fixed some subtle memory leaks.
• Improved the unit conversion utility so unit databases can be saved or imported. Made it easier to modify entries.
• Tweeks to the math libraries.

• Enhanced the data grid by including additional data manipulation functions to insert and delete columns. Added a one-step UNDO.
• Changed the treatment of default font selection to allow easier configuration during intial setup. The application setup dialog has also been improved so it doesn't take so long to load.
• Fixed a bug which reduced the redraw speed of the screen page with certain HP printer drivers.
• Fixed bug where the gradient fill pattern would not always print correctly.
• Added an additional gradient style.
• Other tweaks

• Fixed a problem some Win 98 and 95 users had opening binary files *.TG2
• Clipboard data in date format (i.e. 03-17-99) is automatically converted to date code when pasting from the clipboard. Currently works with graph data grid and not the data analyzer.
• Enhanced the Page Setup option to allow the user to utilize all the available setup functions shown in the dialog.
• Other tweaks and enhancements

• Dramatically improved the performance of the graph data grid and Data Analyzer. Both data grids load and scroll lighting fast regardless of the data set size. Improved the speed of block selection calculation.
• Added additional editing and data features to the graph and Data Analyzer data grids.
• Enhanced the statistics output and fixed a bug with calculating the "f" statistic under specific situations.
• Tweaks to the screen object selection methods.

• Added legend object. This will generate a legend for a graph.
• Added comprehensive support for standard and enhanced metafiles.
• Added two color background option for graphs.
• Created a new HTML help system updated with the latest TG features.
• Added exponentially weighted moving average graph type.
• Enhanced picture properties dialog.
• Added patch to improve import reliability with older binary file formats
• Numerous other tweeks

• Numerous little tweaks in this update. Although, some of them fix annoying behavior.
• Added ability to export graphs to enhanced metafiles via file or clipboard. This allows the user to paste a "scalable" images in many of the popular wordprocessors or spreadsheets.
• Modified to TG2 format to include some graph properties which were originally left out.
• Fixed the station notation axis type which would print extra digits in certain situations.
• New graphs no longer have a default data set associated with them.

• This month marks the two year anniversary since the release of Turbo Grapher on the internet.
• Improved resizing of multiple objects. Still some quirks with poly objects.
• Additional enhancements to binary file format. It will now be easier to use older binary files with upgraded versions of TG. Please note that the TGF text format is obsolete. Added features in TG may not be supported in the TGF file format.
• Added additional features to Axis Properties dialog.
• Improved font and color selection dialogs. They have now been customized. Custom color selections are also remembered. File dialogs have also been improved.
• Fixed some issues with the TG2 format. Graph grid title, name properties and border style are now saved. In the original introduction of the TG2 format, they were not saved.
• Improved printer setup. Printer crashes should be gone. Previously, selecting or customizing page options with certain printers cause the program to crash.
• Improved the efficiency of the data import features. TG will now check file formats with extensions other than those listed in the dialog.
• Added enchancements to the Autosize dialog.
• Added Graph Paper graph type. This allows the user to configure and print a blank grid sheet.
• Added ability to autosize a graph to the page limits.
• Added ability to save and load object styles to and from a file.
• Added embed feature for Picture objects. This allows the user to embed the image within the Turbo Grapher TG2 file. Currently, this only works consistently with smaller *.jpg files.
• Other tweeks

• Added refinements to the tg2 binary file format.
• Added option to "Preference" dialog for selecting the default file type.
• Added "Copy Document" option which copies the entire page object to the clipboard including paper size settings.
• Extended the ability to change properties of multiple objects.
• Changed the mouse data point entry. To add data points to a graph using the mouse, press the ALT key and click the mouse.

• Enhanced the clipboard functions. You can now copy and paste graphs, groups for graphs, or combination of graphs and drawing shapes with the clipboard.
• Changed the version 2.x (tg2) file type to binary. The new tg2 format greatly increase file operation performance. However, any files saved in previous tg2 formats will not load. You must convert from the version 1.x text format version (tgf).
• Eliminated an annoying error with the graph series selection dialog. The program no longer crashes if the series delete button is pressed without having first selected an available series from the list.
• Added a Progress Bar object which acts as a graphical percent or bar indicator.
• Added ability to paste binary data blocks directly into graphs using the clipboard.
• Fixed a bug discovered in the delete block function. Previously, the wrong object(s) may be deleted in a group of selected objects.
• The plot range or fill range will now automatically expand for new data points if the Autoscale function is enabled. Previously, new data points added to a graph may not have plotted if the fill range was set to a subset of the graph data. This was not a bug. Allowing a selection of subsets lets the user calculated graph parameters like area and curve length for portion of a curve. This was primarily a problem with X-Y plots.
• Added a print scale option to the print setup dialog.
• Added addtional editing features to the graph data grid.
• Doubled the number of graph data grid columns.

• Added menu items which load product update or registration web pages.
• Redesigned the print engine to allow for greater printer control and reduced print errors. The only downfall is rotated bitmaps will not print.
• Enhanced the picture dialog to allow the user to select the default bitmap size. Also changed the picture object copy method so it is easier to replicate pictures.
• Added "Combine into Solid" menu selection. This will take two polylines and form a wire frame.
• Added ability to select arrowheads for all nodes on a polyline.
• Created separate page setup and printer setup options.
• Improved loading of graph data grids. Increases efficiency of graphs with small to medium sized data sets.
• Added "Copy Style" function which allows the user to copy format attributes between graphical objects like lines, arrows, etc.
• Improved the clipboard functions to reduce memory usage of object groups.
• Fixed a problem with error calculations on plot series with unsorted data sets. The erroneous area values would be displayed in the "STATISTICS" text and was not related to the Quick Calc dialog.
• Added additional file information to the file open progress dialog.
• Added options to the TOOLS menu which loads the Windows(tm) Calculator.
• Added option to PREFERENCES dialog which lets the user select the default program window background color.
• Added function to calculate the area of polygon sections. The points which define the polygon are determined by a range of data selected by the user.
• Added function in the Data Solver to calculate the volume of a series of polygon segments. The polygon segments are defined by a range of selected data.
• Added ability to export drawing objects to a file. This is useful when you wish to save a complicated object or create a template.
• Added Shadow property to graph titles and axis labels.
• You can now save and load files in Version 1.x and 2.x format even though version 2.0 has not been released. The version 2.x format is more compact.
• Added ability to create graphs from subsegments of existing graph data. The Data Solver also has the ability to preview a plot before creating it.

• Added ability to set the plotcount for individual graph series.
• Added ability to enter graph points, using the mouse, by holding in the SHIFT KEY and clicking the mouse over the graph area.. Holding the SHIFT KEY in without clicking the mouse will give the current graph mouse coordinates.
• Enhanced the Graph Data dialog with a toolbar.
• Added ability to select the location of a single arrowhead at either end of a leader, not just the endpoint.
• Added additional text formats to data IMPORT and EXPORT functions.
• Resolved division by zero errors in the Quick Calc dialog.
• Added multiple UNDO levels. You can set UNDO's to a maximum of 20 in the preferences dialog.

• Added enhancements to the Quick Calc dialog. You can now calculate parameters for X-Y graphs between plot points. Also fixed inaccurate calculation values caused by unsorted data.
• Added volume calculation function.
• Added additional error trapping to allow easier upgrading for people with improper application settings.
• Added a "Diamond" object to the drawing tools.
• Added area calculation for polygon objects.
• Fixed several bugs in V1.802 with memory corruption issues.

• Fixed a potential memory problem with the derivative plot and "Equation from Formula" options.
• Fixed a problem with grid selection statistics. The column title row was sometimes added into the calculation.
• Some other minor tweeks.

• Added quadratic spline graph type and drawing object.
• Fixed bug where page definition was lost during printing or file save operations.
• Fixed axis font rotation so text aligns properly with grid lines for any rotation within the selection range.
• Added additional enhancements to Quick Calc dialog.
• Added ability to set graph plot area for individual graphs.
• Added separate rotations for x-axis and y-axis.
• Added Poly Text tool which draws text along a curve.
• The starting spline slope can be changed by double-clicking the first node.
• Added "Custom Autosize" dialog which will size a group of selected objects to user defined parameters.
• Increased maximum data points to nearly 3000 per series.
• Improved calculation speed.
• Added "Data Properties" option which calculates useful information about data grid information.
• Added matrix inversion and transpose options to the Data Solver tool.
• Added a unit conversion database feature which allows the user to quickly make unit conversion between number. The database can be modified, so additional factors can be added.
• Reduced executable size by extracting key functions into separate DLL's. This will facilitate easier upgrading.
• Added ability to turn stat text generation on and off. By turning this feature off, calculations are quicker.

• Enhanced Arrow object by adding a text feature. This allows the Arrow to be used like a dimension line found in CAD applications.
• Added ability to copy and paste mutiple objects. This feature excludes graph objects. The default number of clipboard objects is 50. However, the user can set the total to a maximum of 100 in the program preferences.
• Added ability to copy and paste graph formats. Provides a quick way to format multiple graphs. Changed structure of graph format saved to disk file.
• Fixed bug where the NEW option would not always react unless you initiated a change to the project.
• Enhanced OBJECT POSITION option to allow selective sizing of objects.
• Added Copy and Paste options to graph popup menu.
• Clipboard objects now scale to the current page scale.
• Add ability to set the default graph plot area size within the graph rectangle.
• Fixed minor bug with on-screen editing of text boxes where edit area would not always disappear when clicking off the edit area.
• Enhanced object line styles. Each line type can now be any thickness.
• Added QuickCalc dialog to allow the user to quickly calculate graph values like area, curve length, derivative at a point, and inflection points. The calculation range can also be set. You can also generate a plot of function derivatives from this dialog.
• Added ability to select the fill range when filling the area under a curve. Previous versions would fill the entire curve only.
• Added AutoSize function which quickly sets a group objects all to the same size and aligns them on the screen page.
• Enhanced the ability to set the properties of group selections.

• Improved object selection. Fixed bug where multiple object selection sometimes wouldn't drag correctly.
• Added mouse coordinate option.

• Added interface coded to isolate TrueType fonts for use in the Turbo Grapher editor. Also can detect if a TrueType font is the current default font. Turbo Grapher needs to use TrueType fonts in order to work properly.
• Added ability to resize rotated text boxes.
• Modified font scaling to better match printed point size.
• Now including help file with shareware version. However, a shareware notice is printed on all output.

• Fixed bug with scaling of Log Axis. Sometime maximum value was off by one cycle.
• Fixed minor bug with plotting log fits using log axis type.
• Added Savitsky-Golay Smoothing Filter Option to Moving Average Plots.
• Fixed Interpolation Graph Type.
• Additional Interface Enhancements.

• Fixed log axis type. Log scales now plot properly.
• Added additional code to detect tampered license files.
• Added separate function to create graphs from formulas quickly.

• Fixed bug in "Linear Fit" graph type. Bug was generated with version 1.5 update.
• Added code to catch zero dimension objects which cause a"Division by Zero" error. This error would not crash the program, but would occur repeatedly.
• Enhanced Custom Equation setup dialog.
• File Open dialog remembers last folder that was accessed.
• Added prompt to prevent opening files which are from a newer version of Turbo Grapher than is currently running. (actually added in version 1.5)
• Screen page to printer scaling was slightly off. I have improved this, however it will still print slightly smaller (approx. 0.2 in.) than shown on the screen.

• Added intersection solver which finds the approximate intersection between curve. Currently operates in a manual mode.
• Added enhanced setup dialog for polynomial and spline graphs which allows the user to quick change fit parameters and view statistics.
• Speeded up graph regenerations during general graph editing.
• Maximum polynomial degree is now limited to 20.

• Added ability to set individual graph types for each series in a graph. This may not work properly when mixing cumulative frequency plots with other types because of the nature of the cumulative frequency graph..
• Added ability to set individual fill styles for each graph series.
• Reformatted statistics output for better clarity.

• Added equation solver utility which allows the user to solve linear systems with up to 30 unknowns.  This utility is only available to registered users.  (Thank you to those who has registered!)
• Added additional line style to graph series and drawing objects.
• Fixed minor bug where dragging or rotating pictures would display a filled-rectangle instead of an empty rectangle.
• Extrapolation dialog now defaults to graph scale value until user changes to custom value.  Prevents errors.
• Changed orientation of probability plot axis so that the cumulative distributions values are on the x-axis.

• Added Bezier Graph Type.
• Added "Station Notation" type to axis labels.
• Added ability to import text files into a graph data grid.
• Fixed a minor bug with the extrapolation function which would plot an erroneous second line on the lower extrapolation boundary.
• Added output of spline coefficient in the spline statistics dialog.
• Added registry file and internal function which will register Turbo Grapher File type with Windows.  This happens automatically when you first run Turbo Grapher.

• Added ability to calculate graph area from origin and from y-min. axis values.  This version fixes a bug which was present in Version 1.4.30.
• Increased reliablility of screen page object selection.
• Added ability to enter graph data column titles.
• Fixed bug where custom scale would "blank" screen page.
• Updated Help file available to registered users.
• Added ability to justify text to the top or bottom of the selected area.  Single line text only.
• Fixed bug where Paste Special dialog would show all formats on the clipboard, including those Turbo Grapher can't paste.

• Added "On-Page" editing of text boxes.
• Added ability to extrapolate fitted curves beyond the bounds of the graph data.  Useful for estimating values.
• Worked on user interface to make object manipulation easier.  Not perfect, but better.
• Added additional features to the ARROW object including multiple arrowheads.  You can also add arrowhead to POLYLINES.
• Added object link to ARROWS.  This allows a text box to be anchored to the end of an arrow.  This function is functional, but is not 100% complete.
• Object position dialog can now display in pixels or inches.
• Added additional options to the printer setup dialog including available paper sizes.

• Multi-object selection is 95% complete and functional.
• Added group object support for common properties such as object locking, color, delete.
• Modified UNDO operation for multiple objects.
• Fixed minor bug in area calculation algorithm  Everthing should work fine now.
• Added ability to shade the area under curves with patterns.
• Fixed bug where different screen scales would affect the scaling of the printed page.

• Added ability to add and remove nodes anywhere in a polyline or polygon objects.
• Added additional features to the buttons bars.
• Added ability to select additional colors for drawing objects.
• Added default page scale feature on application setup.

• Reformatted button bars to add additional features.
• Finalized registration code and added "Nag" dialog during exit.  Sorry!,  please register.
• Fixed bug in file format which caused Turbo Grapher to confuse which format to recognize.

• Add ability to change axis and grid line colors.
• Added registration dialog.
• Updated graph format save option to include more features.
• Modifed zoom list to include additional "quick picks".
• Fixed bug with Column 7 of data grid where entering data would cause crashes.
• Working on multi-object selection.

• Added versatile arrowhead option to line and polyline objects.
• Added GIF, JPEG, WMF, EMF, and RLE formats to picture objects.
• Re-compiled to a faster native code format.  Previous users must download and install the new full version.
• Added ability to modify Spline object starting and ending slopes.  The spline graphs already had this functionality.

• Fixed problem with erroneous zeros begin added to data grid after PASTING from the clipboard.

• Fixed an annoying bug that caused data points outside of the graph scale to be dropped from the plot points.
• When polyobjects are switched to bezier, points are added as need to draw the object properly.
• Fixed printing problem where rotated borders are not printed properly.

• Enhanced data manipulation dialog to include custom formula, fill cells, and numeric formatting.
• Added spline options dialog.
• Temporarily fixed problem with multiple x-series plots changing plot data. Note that if plots series use common y values, you should create a separate y column for each plot on the data grid. This will prevent mis-sorting of graph data. I'm working on a permanent fix for this problem.
• Changed axis properties dialog to include rotation of label fonts.
• Fixed bug where underlining graph titles also caused plot markers to be underlined.
• Fixed bug where setting a fill pattern on an object may carry over to other objects.

• Increase maximum number of data points to 300 per plot series.
• Added cubic spline graph.
• Added spline and bezier smoothing option to poly objects.
• Add equation editor which allows plotting of custom functions.
• Enhanced plot series selection to increase flexibility. You can now select independent x-axis fields for each series.
• Added ability to perform math on data grid values.
• Added several date formats to axis labels.

• Added ability to save graph format to disk file.
• Fixed bug where data pasted from the system clipboard may not be immediately recognized by a graph.

• Modified object selection to avoid problems choosing objects located within another.
• Added customizable page grid to assist with object placement.
• Fixed printing bug where line types other than solid would not print.
• Added "Send to Back" function to allow repositioning objects.

• Enhanced polygon drawing object by allowing pointwise editing of existing shapes.
• Added Polyline object
• Added additional editing features to polygons and polylines.
• Added ability to copy individual objects as bitmap objects.
• Moved initialization settings to the Windows registry from private initialization files.

• Added Color Gradient Function Which Allows Attractive Backgrounds for Text Boxes, Shapes and Graphs.
• Allow Setting Background Properties for Graphs.
• Changed Default File Extension to TGF.  The File Format is The Same.
• Modified Area Calculation Algorithm to Calculate Only Within the Range of the Given Data Points and Not the Min. and Max Axis Settings.
• Added Area Calculation for X-Y Plots
• Included Custom Equation Graph Type Which Will Allow the User to Manually Set Parameters for Predefined Functions.  This Will Eventually be Converted to a Non-linear Fitting Rountine.
• Modified Graph Labels Font Properties to Include The UNDERLINE Style.
• Modified Formula Text Generator to Eliminate Dual Signs From Appearing (example: f(x)= x + -2).
• Began Work on Log Axis Type.  Not Completely Functional.

• Fixed Bug Where Graphs Text and Symbols Would Not Plot Transparent on a Printer. Previously Plot Symbols and Graph Text Would Overwrite Adjacent Areas.

• Added Logarithmic Curve Fit Capabilities w/Area Calculation Option.
• Increase Maximum Number of Data Points to 250.
• Fixed Problem With Saving Number of X-Axis and Y-Axis Major Ticks From AXIS PROPERTIES Dialog Box.