Free download:
LeoStatistic.zip or
LeoStatistic.exe
(selfextracting winzip file)

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Data manipulation.

Best way to think about data in LeoStatistic is consider them as several tables with different number of rows but equal number of columns. One column in one table presents one parameter. One table itself is represents a data series. All corresponding parameters in different series play the same roles in statistical schemes. Other way of presenting parameters in one series is like this:

p1 = F1(p3,p4); p2=F2(p3,p4);  p5,p6 - out of game. p1 and p2 are Values here; p3 and p4 - Arguments; p5 and p6 - Inactive; F1 and F2 - same functions or way of presentation. Each Value by itself can be presented by color, shape and size of markers on the chart.

Most of data manipulations are begun or can be fully completed in the "Data" tab of the control panel:

How to:

Rename parameter.
Click on the name of parameter. Type new and press "Enter".

Change status of the parameter..
Click on the cell with desirable status near the active (where the name of the parameter is).

Make all parameters inactive.
Press button "Make all inactive" in "Data" tab of controls panel. This option could be very helpful to save time in case of necessity to change status of many parameters with large number of records. Best strategy here in saving time is to avoid unnecessary calculations is at first make all parameters inactive. Then set status for all arguments and at very last to set values.

Edit presentation of value.
Check up a corresponding parameter in column "Selection". A group of controls permitting to modify shape, color and size of the markers of the value parameter will appear. Modify them as you want.

Delete parameter.
Check up a corresponding parameter in column "Selection". Press button "Delete" in "Data series" group of controls. If there are more then one series of data all corresponding parameters will be eliminated from every series.

Delete series.
Check up a corresponding series in column "Selection". Press button "Delete" in "Data series" group of controls.

Delete all data.
Press button "Delete all" in "Data series" group of controls.

Modify data of a parameter.
Check up a corresponding parameter in column "Selection". Press button "Modify" in "Data series" group of controls. The dialog with available options for modifications of parameter will appear:

It gives opportunity to perform one of the standard action from built in operations:

• delete all records when selected parameter is more (less) then given value.
• delete all records when selected parameter is in (out) of the given interval of values.
• normalize the values of the parameter that means that program will recalculate elements of the parameter by formula:
  p^*_i = (p_i - p_min)*(N_max - N_min)/(p_max - p_min) ,
  where p^*_i  - new value; p_i - old value; N_max , N_min and p_max , p_min - new and old values of minimum and maximum borders of array of p - parameter. This operation could be very useful for correct implementing of some statistical schemes like for example a near neighbors estimation. But we always are staying short to give generalizing recommendation applicable for all situations these could be too disperse for it.
• recalculate by the user programmed formula. The valid syntax of the formula is quite intuitive:
• Names of the parameters is the data series a represent them for the current record.
• Names with square brackets with integer number inside are represent value shifted ahead or back from the current record. 
• The capital letter "N" is reserved for represented a current index of processing (current) record.
• Supported operations include +,-,*,/ and ^(power. 2^4 is equivalent 2*2*2*2).
  Also functions with standard meaning: ln, exp, sin, cos, tan, asin, acos, atan, log10, sqrt, abs, pow10  are supported as well the reserved word pi=3.141592653. Two function are producing random numbers: rand(x) monotone distributed in interval from 0 to x;  gauss(x) - normally distributed around 0 with standard deviation equal to argument. Function int(x) round the value to closest down integer.

 

Insert a parameter..
This operation can be performed only for first series or when no series open in the LeoStatistic yet. Click in button "Insert" in "Data" tab of control panel. The "Insert" dialog will appear.

• Arithmetic progression.
• User defined formula with the syntax as described above in "Modify parameter" section.
• Current statistical scheme used for approximation of existing data. This option is limited only for one data series and one, the last, value. In simple words it will set a values exact on theoretical curve.
• Correlation scores (from 0 to 100) that produces reflected probability for given existed parameter to be large then arbitrary set number. This statistical scheme have direct relation to the marketing and in much more details are described in page marketing

Click "Insert". The new parameters will be inserted. (If "Scores" scheme will be chosen additional actions will be needed to perform.

Edit records.
In "Data" tab of control panel click on the "Show data" button if  the spreadsheet like window is not shown yet it will appear like this:

Following operations with data are supported:

• Edit content selected of cell.
• Add new roe of records. Fill up the row the next after last included into row and press "Enter" when last cell at the record is active.
• Delete records - select records by clicking on its id in "Counter" column and click "Delete" button.
• Paste records from clipboard. Copy an area with the same number of columns as in active data series of LeoStatistic for example in MS Excel. Select the row after with the content of clipboard will be placed and click on "Paste" button.
• Copy records. Select one or several records in clipboard memory and click "Copy" button.
select records by clicking on its id in "Counter" column and click "Copy" button.
Note that selection of the record be performed only for visible part of data. After navigation along data all selections are canceled..
• Copy all records. By clicking on the button "Copy all" all content of the series will be copied into clipboard memory and later on can be paste in other applications or other place on LeoStatistic. Warning - for very large set of data this operation can take forbiddingly large computation time.
• Save as text file. Click on "Save as" button and chose the file to create that will contain data in ANSI text format with space delimited cells that easy later on open on such applications as MS Excel.

Tip: Any change in data control initiates a recalculation of the data presentation and statistical evaluation. For not too large number of the records it's not a matter but for large it could be. To avoid this effect make all parameters inactive during editing of the data.

Building histogram

Distribution of two variables.

Approximation
(constructor style interface).

3D view.

DOW trend.

Signals revealing.

Near neighbors method.

Harmonic analysis.

Fit with free format formula.

Curve fit of crystal growth rate.

Get data from image file.