Why don't Grapher's Frame Limits work correctly with saved Grapher files using multiple equations on Mountain Lion?
Hi,
I generally enjoy using Grapher in OS X (I am using Mountain Lion v10.8.2). However, I have repeatedly encountered what seems to be broken basic functionality in setting the limits on the display frame (View> Frame Limits…). When opening saved Grapher files with multiple valid equations in them (equations which include constant terms defined as sets of numbers), I repeatedly get the following behavior:
1. Frame limits are not correctly saved. As in, the file opens with a different view than it was saved and closed in.
2. Frame limits no longer work as expected. For example, I might set the Y axis frame limits to be -2 to 2, but the Y axis of the frame display will run from about -1.95 to about -0.35.
3 Performance is degraded. Making a change to the frame limits (for ecxample, changing the Y frame limits to -2.2 and 5 in an attempt to display something approximating the range -2 to 2) take an inordinate amount of both processor time and clock time. The spinning ball appears and hangs out far longer than is welcome, and at times seems to hang requiring a force quit of Grapher.
These problems occur regardless of coordinate system.
Is there a solution? If I create a new file and start from scratch the problems reappear. The problems reappear across a wide range of 2D equation types.
Is Grapher simply broken in this regard?
Thanks for the input.
Bonjour Lexy-Lou,
You are right, the bug was born with Grapher as you may read on the website
<http://y.barois.free.fr/grapher/> :
Grapher’s bugs and their remedies (OS X in French).
Bug nr. 1. (Grapher 1.1, 2.0, 2.1, 2.2, 2.3). When modifying the main 2D window size, the graph length and height already formatted (menu Format) are changed : axis scale values stay the same, added objects remain same size on the same places (unit pixel) relative to the graph left upper corner ; but the graph view changes for the ratio H/L do so : very annoying !
The remedy : To restore the 2D graph after changing the window size : menu Format > Layout > Size > redo the initial choice (paper size or L and H values)… or avoid having to do so by selecting a window large enough to begin with.
Proposed correction : making the graph size independent of the main window’s one.
Bug nr. 2. (Grapher 1.1, 2.0, 2.1, 2.2, 2.3). Saving is wrong in 2D (menu File > Save, Save as, Save a copy as). Are not seved : the last location on the screen of the main window, the graph size, the maximum and minimum values of the ordinate scale : very very annoying !
Note : The new windows of Grapher 1.1 (Grapher secondary window > New Graph > 2D or 3D Graph) always open in the same place on the screen( OS X 10.4.11 configured in French) depending on the language used by Grapher : if it’s English, well placed and covering most of the screen, if it is French, the windows are half length but same height and are located on the right side of the screen. This anomaly disappeared with Grapher 2.0, 2.1, 2.2 (English or French).
The remedy : to restore the 2D graph after opening a GCX files (.gcx) : menu Format > Layout > Size > redo the initial choice (Paper size or L and H values) to be done twice ; then menu View > Frame limits... > enter minimum and maximum vaues of the y scale. This requires to note four numerical values, L, H, y-min, y-max, for example at the top of the equation list (or at the bottom : see bug nr. 27).
Proposed correction : complete saving in 2D.
For the full list of Grapher's bugs please download "Instructions for Use - Grapher" (English) or "Mode d'emploi de Grapher" (French). Quick glance at the Contents (pages 2 & 3) you'll be surprised by the possibilities of Grapher.app despite the bugs.
Enjoy,
Au revoir,
YB24
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