HELP VINNY GRAPH for POCKET PC

CONTENTS

1-DATA ENTRY
2-EDIT COPY and PASTE
3-VIEWING GRAPH and AUTO
4-SAVE and OPEN VIN FILES
5-SAVE and OPEN GRA FILES
6-SETTINGS

ADVANCED OPTIONS

7-INTERPOLATE and REGRESSION
8-SCIENTIFIC NOTATION
9-MATH OPERATIONS

1-DATA ENTRY
Use [Window|Data] to switch to the data page. Navigate data cells by tapping or by using the cursor arrows on the soft input panel (SIP). Tap digits on the SIP to enter values into the highlighted cell. The backspace removes one digit at a time and the delete removes the entire cell contents. If more data cells are needed tap [Edit|Add Cells]. This adds 10 rows each time it is tapped. The ID and X columns are automatically duplicated on the right side of the spreadsheet to facilitate Y3 and Y4 data entry and review. Use the horizontal scrool bar to display Y3 and Y4 columns and the vertical scrool bar to display additional rows.

2-EDIT COPY and PASTE
The [Edit] menu item on the data page provides for copying and pasting. The [Edit|Copy Cell] copies just the selected cell. The [Edit|Copy Column] copies the data in the selected column starting at the selected row and moving to the end of the column. The [Edit|Copy All] copies all the X,Y1,Y2,Y3 and Y4 data values to the Windows clipboard. The [Edit|Paste] pastes single values or blocks of data into the mini spreadsheet. The data is pasted into the cells starting at the position of the selected cell. Blocks can be transferred to the cells from other programs such as Microsoft Excel. The [Del] key on the SIP and the [Edit|Delete] menu item both perform the same function. If the selected cell is not in an ID column it is deleted. If it is in an ID column the entire row is deleted. [EDIT|DELETE COLUMN] deletes the selected column starting at the selected row and moving to the end of the column.

3-VIEWING GRAPH and AUTO
After entering or loading data use [Windows|Graph] to view the graph or use [Windows|Settings] to manually set graph scales and grids. If you go directly to [Windows|Graph] tap [Auto] to automatically set scales and grids. If you can not see your data on the graph tap [Auto]. [Auto] sets the scales so that all data points fall into the range of the graph. After using [Auto] you may manually fine tune the values of the scales and grids using the settings page.

4-SAVE and OPEN VIN FILES
In addition to manual entry and windows clipboard copying, data can be loaded directly from VIN files. Both graph data and graph settings are saved using [File|Save VIN] and retrieved using [File|Open]. The type VIN files generated on your pocket PC use .vin extensions. VIN files can be synchronized with Vinny DeskGraph as explained in the DeskGraph help file. Vinny DeskGraph can be used to print graphs or to save graph images as [.bmp] files. Use [File|New] to clear all data and to set graph settings to their default values. 

5-SAVE and OPEN GRA FILES
Both Vinny Pocket PC and DeskGraph versions can read and write GRA files used by the desktop program Vinny Graphics version 2.02 for scientists and engineers. However,  data reading is automatically truncated to aline with the Pocket PC version capabilities. In Vinny Graph use [File|Save GRA] located only on the graph page to save in GRA v2.02 format.

6-SETTINGS
The [Window|Settings] allows selection of the graph type for data sets Y1,Y2,Y3 and Y4. Tap the desired radio buttons. Graph options include points, lines, bars and linear, 2nd order, log and power regression fits. Tap [Auto] to set the scale values for Xmax, Xmin, Ymax and Ymin. [Auto] also sets XY grid values. Modify these initial settings as desired. The numeric format and decimal digits for intermediate scale values are set by the format of the user input max and min scale values. If data values are changed you may want to rerun [Auto]. Edit graph titles as desired.

ADVANCED OPTIONS

7-INTERPOLATE and REGRESSION
The [Window|Interpolate] estimates values of Y given X and allows selection of the best regression fits. First select the radio button for data set Y1,Y2,Y3 or Y4. Input individual X values into the top text box. Tap [Interpolate] to estimate a corresponding value for Y.  Both a straight line and a curve fit estimate  are provided. Tap the desired regression type to change the curve fit equation. Use the coefficient of determination to select the best fit. The best values are less then but nearest to one(1). Tap [Copy Y Estimates] to copy estimated Y values and [Copy Coefficients] to copy regression coefficients to the Windows clipboard. Note the [Graph] current "type" is automatically switched to the selected regression equation. 

8-SCIENTIFIC NOTATION
You can use scientific notation entering data into data cells. For example the following data values are acceptable entries on the data page: -1.2792e+23  or 5E6 or 22.7e-33 or +7.1E22.  You can also use scientific notation when manually entering data values for Xmax, Xmin, Ymax and Ymin on the settings page.  If  scientific notation is used for max  or min axis values, the rest of that axis scale values will be in scientific notation.

9-MATH OPERATIONS
The [Math] menu item on the data page opens and closes a user math operation constant "K". The constant can be added to the selected column values or it can multiply the selected column values. The following 4 steps outline the use of math operations:

(1)-Tap menu item [Math|K + Column] for adding or [Math|K * Column] for multiplying. Hint: You can use negitive K values to substract and reciprocal values to divide.

(2)-Input a constant value "K" into the upper right text box.

(3)-Tap the desired column while setting the starting row for the math operation. CAUTION: This step is very critical.

(4)-Tap the [K */+ Column] button in upper left corner to perform the indicated math operation on selected column, starting at the selected row, and automatically moving downward to the end of the column.


(3)-Tap the desired column while setting the starting row for the math operation. CAUTION: This step is very critical.

(4)-Tap the [K */+ Column] button in upper left corner to perform the indicated math operation on selected column, starting at the selected row, and automatically moving downward to the end of the column.


