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SVEDBERG Revision History

Version 7.0.3 (dated 09/05/2013)

enhancements:

bullet

registration is no longer required

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axis scaling and tick mark intervals can now be customized by clicking directly on the corresponding axis

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adding graphs to log was not marking analysis window as needing to be saved

bug fixes:

bullet

the last folder used for loading data was not being saved

bullet

fixed bug when writing out converted intensity scans

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fixed bug causing errors in bootstrap and Monte Carlo routines

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when absorbance intensity data are converted to true absorbance or pseudo-absorbance during loading the file names are correctly shown with the .ra_ extension rather than .ri_

Version 7.0.2 (dated 04/15/2012)

bug fixes:

bullet

fixed problem with memory allocation causing false 'out of memory' errors

bullet

the F1 key was not bringing up context-sensitive Help

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fixed problem with fit report formatting when using non-English regional number formatting settings

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importing a c(s) distribution was not turning off delta-c mode if that was previously turned on

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after switching to delta-c mode, if a fitted TIN had previously been computed it was still shown on the graphs

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the sloping plateau parameter was incorrectly available as a fitting parameter for interference and fluorescence scans

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line residual plots were displaying legends when legends should be off by default

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when RIN is used the fit report now correctly shows RIN values for each scan (or the sum of RIN + jitter when both are used)

Version 7.0.1 (dated 03/20/2012)

bug fixes:

bulletfixed problems with installation and registration

Version 7.0.0 (dated 3/18/12)

first release of major update with new user interface, new fitting function, and other major improvements

Version 6.39 (dated 01/06/2001) (zero bugs reported for this version over 11 years!)

enhancements: 

bulletit is now possible to return to the coarse meniscus setting graph from within the fine setting procedure
bulletClaverie simulations of absorbance scans now default to 601 radial points to better match the typical number of points actually taken when using the default 0.003 cm nominal spacing
bulletimproved detection of fit convergence 

bug fixes:

bulletfixed problem with turning off one (but not all) constraints
bulletfixed display problem with confidence level dialog box
bulletfixed problem that user-supplied Comment lines for Claverie simulations were being written to the disk files but not stored in internal memory
bulletfixed minor problems in calculating derivatives when fitting to mass rather than D

Version 6.38 (dated 07/15/2000)

enhancements: 

bulletimproved accuracy for graphical setting of meniscus 

bug fixes:

bulletfixed intermittent bugs in fringe shift correction after turning y-matching on and off
bulletfixed fringe shift bug in graph of all scans when some scans that had been loaded were marked for exclusion
bulletfixed bug in restoring preferred default folder for saved fits 

Version 6.37 (dated 03/05/2000)

bug fixes:

bulletfixed error in calculating temperature correction to vbar for use in conversion to s20,w  
bulletfixed failure to restore all parameters needed for s20,w conversion when reading saved fits

Version 6.36 (dated 02/26/2000)

bug fixes:

bulletfixed bug in restoring fits saved with version 6.35 when conversion to s20,w was active 

Version 6.35 (dated 02/06/2000)

enhancements: 

bulletability to copy all parameters from the Calculate Mass or D form to the Clipboard

bug fixes:

bulletfixed bug in conversion of raw D values to D20,w 
bulletfixed bugs in the Calculate Mass or D form 
bulletsolvent density was being replaced with that of water when conversion to s20,w was active
bulletthe user could still alter the temperature and density even when conversion to s20,w was active
bulletthe masses from the last fit were not being loaded properly when s/D mass units were in use
bulletfixed minor formatting problems in fit reports
bulletfixed incorrect display of delta-c mode on certain graphs

Version 6.34 (dated 12/19/99), maintenance release

bug fixes: 

bulletfixed error in reporting number of degrees of freedom for fits using delta-c mode
bulletfixed error related to numeric formatting preferences

Version 6.33 (dated 12/04/99), maintenance release

bug fixes: 

bulletfixed error upon loading defaults from the svedberg.ini file when the decimal indicator is not '.'

Version 6.32 (dated 11/26/99)

enhancements: 

bulletnew Preferences items for setting default folders for scan files and saved results
bulletthe user preferences for the decimal indicator ( . versus , ), as established by Windows Control Panel settings, are now obeyed for user input and program outputs
bulletthe Claverie simulator can now create new folders for storing scans created by the simulation

bug fixes:

bulletfixed bug causing minor errors in conversion to s20,w 
bulletfixed bug in the Graph All Scans commands causing a crash when some loaded scans were excluded from the analysis
bulletthanks to Jack Correia for reporting this bug 

Version 6.31 (dated 10/09/99), maintenance release

bug fixes: 

bulletfixed problems with conversion from raw s to s20,w
bulletmanually-entered values of vbar at 20 C were not being displayed when the dialog box was redisplayed
bulletsaved fit files did not contain all the information needed to perform the conversion upon reloading
bulletfixed problem giving occasional (0,0) points on graphs during the 'Set Fit Range (all sets same radii)' procedure in delta-c mode, causing poor graph scaling
bulletaltered logic defining convergence to take care of occasional failures to detect that convergence has occurred
bulletthe Help file was updated

Version 6.30 (dated 9/23/99), free upgrade release

enhancements: 

bulletsedimentation coefficients can now automatically be converted to s20,w values (same algorithms as SEDNTERP)
bulleta new graph is available for interference data overlaying all the scans after adjustment for integer fringe shifts and Y matching
bulleta new dialog box simplifies meniscus setting
bulletthe meniscus position and Y matching settings can be retained when you add or remove scans from the same experiment by selecting a 'Retain Meniscus Setting' check box on the Data Included in Fit form
bulletif data for fitting were loaded with the 'all scans same radii' procedure, new data will automatically be loaded with the same range
bulletedit buttons have been added to the Data Included in Fit form to simplify editing of the scan files
bulletthe graph displayed during the Set Fit Range (all scans same radii) procedure is now corrected for integer fringe shifts and Y matching
bulletY matching is now turned off with a separate menu entry, allowing quicker alterations of the matching regions
bulletit is now possible to copy and paste large amounts of graph data as text directly to/from the Clipboard; i.e. the 'Copy graph data to Clipboard' command will work even for graphs with tens of thousands of data points, without having to write the ASCII data to disk when the text exceeds 32 Kbytes as required in the past
bulletthe Help file has been updated to reflect these changes and reorganized to group together tutorials and FAQs on the Contents page

bug fixes: 

bulletfixed bug arising if the Files Included in Fit form was closed using the control box instead of the OK or CANCEL buttons
bulletadded ability to exit Claverie simulation form without performing a simulation using the Cancel button
bulletfit results are now cleared if you change vbar, solvent density, or other values that alter units conversions
bulletfixed bug causing a crash when graphs are displayed if you had maximized the main program window (maximizing is now disabled)
bulletthe menu status is now properly updated when the program is started by double-clicking on a .fit file
bulleta work-around has been implemented for a Windows NT-specific error after saving .fit files

Version 6.23 (dated 04/17/99), maintenance release 

bulletfixed an error at the conclusion of the "Set Fit Range (all data sets)" procedure arising for interference scans if the "Match Y Values Over a Region" option was not invoked (which normally only is true for simulated data)

Version 6.22 (dated 04/09/99), maintenance release  

bulletfixed a problem in printed reports with printing the D or M values corresponding to the best fit M or D parameters (values for the second and higher species were incorrect)
bulletthe installation program no longer creates icons in the main program group if you answer "No" to creating a folder 

Version 6.21 (dated 03/27/99) 

enhancements: 

bulletthere is now a default value for the outer radius of the region to be included in the fit, so that data beyond the base of the cell and/or the region where solutes are accumulating at the cell base can be automatically excluded
bulletthere is now a default that determines whether the initial guess for the region to be used in vertically aligning interference scans will be to the left of the meniscus (air-air space) or to the right of the meniscus

bug fixes: 

bulletfixed a problem with the correction for integer fringe jumps when a Y matching region was used and the scans in the matching region differed by integer fringe jumps
bulletfixed a problem that left the cursor in the hourglass shape after setting a Y matching region

Version 6.20 (dated 03/07/99), free upgrade release 

enhancements: 

bulletsaved fits (*.fit files) are now associated by Windows® with the program so they can be restored by double-clicking on the file name
bulletprinted reports now include the best-fit diffusion coefficient(s) when M is being used as a fitting parameter, or the apparent M values when D is being used as a fitting parameter
bulletthe molecular mass calculator form will now calculate D values when s and M are known
bulleta new option is available for certain graphs to convert the X axis from radius to sedimentation coefficient
bullet this can be helpful in obtaining starting values for sedimentation coefficients and in interpreting residual plots
bulletthe setting of radial ranges of data to be included in the fit was simplified
bullet in the 'Set Fit Range (all sets same radii)' command, rather than asking you to specify a data set, the program now automatically displays the first, middle, and last scans
bullet when fitting data in the delta-c mode the delta-c data are automatically displayed
bulletthe setting of regions for vertically aligning interference scans was simplified
bullet in the 'Match Y Values Over a Region' command, rather than asking you to specify a data set, the program now automatically displays the first, middle, and last scans, making it easier to identify regions near the meniscus where solutes have been cleared
bulletnew keyboard shortcuts CTRL-F, which starts fitting, and CTRL-R, which displays the results of the last fit, were added
bulleta Printer Setup command was added to the File menu for easier selection of the printer to be used for fit reports and graphs
bulleta new program default can optionally reduce the size of the graphs window to leave room for the Windows® 95/98 Taskbar.
bulletthe Help file was updated to reflect these enhancements, to add additional clarifications and usage tips, and to make it possible to search for those pages containing usage tips

bug fixes: 

bulletthe Help file now works properly under Windows® 3.1 as well as Windows® 95/98 (sorry, my Help compiler was not working properly)
bulletchanging the fitting model now clears the Results page for the last fit if that page was being displayed
bulletchanging the molecular weight units now clears the Results page for the last fit if that page was being displayed and M was being fitted rather than D
bulletthe main program menus are now disabled during fitting to prevent selection of inappropriate commands while a fit is in progress
bulleta test was added when restoring fits from the recent files list to be sure the file actually still exists in that location before attempting to load it
bulleta bug in Species graphs when the slope correction parameter was used was fixed
bulletthe 'Match Y Values Over a Region' command is now not available until after the meniscus has been set
bulleton the graphs page, when an axis is autoscaled the Axis Options dialog box now grays out entries which will be set automatically

Version 6.13 (dated 1/23/99) 

enhancements: 

bulletdecreased minimum calculation increment in Claverie routine from 0.1 to 0.01 sec (times < .1 s may be needed for highly accurate simulations of very rapidly moving boundaries, but this will be slow)
bulletwhen saving or restoring fits the previous file name is cleared and all saved fits (*.fit files) in the current directory are listed

bug fixes: 

bulletcorrected bug causing overflow error during calculations of confidence intervals for fits with more than 32K data points
bullet thanks to Dana Wang at UConn for finding this one
bulletcorrected bug in Claverie form causing incorrect display of progress bar

Version 6.12 (dated 1/10/1999) 

enhancements: 

bulletwhen setting the range of data to be fitted, the HOME and END keys now move the highlight bar all the way to the left or right, respectively; the 'large steps' obtained with the CTRL key are now larger when working with interference scans to obtain more rapid movement
bulletthe ability to set the Delta-c mode as the program default was added
bulletslightly improved computational speed
bulletfurther clarifications about setting the meniscus and matching regions were added to the Help file

bug fixes: 

bulletsequence loads of scan files can now be aborted with the ESCAPE key (helpful if you forget to set 'Stop After x Files')
bulleta computational problem that occurred only for the modified Fujita-MacCosham function and only for very high molecular weight species (>~2 Meg) was corrected

Version 6.11 (dated 1/4/1999), maintenance release

bulletthe recently-used files list sometimes contained duplicate entries
bulletthe "spin-button" on the Fitting Model form, which can be used to change the number of species, always started from 1 rather than the current number of species.

Original release, version 6.1, dated 11/16/1998