Added support to connect a serial Spec20D or D+ to a Windows computer. Supports continuous reading of Absorbance, Transmittance, and Wavelength in addition to readings commanded with the "Print" button on the D+.
- Derivative function now uses partial linear regression when the point span is larger than 4 - much smoother derivatives with noisy data.
New "Power User" Functions
Averages n points down to 1, resulting in a data set with a n-times reduction in the number of points.
With the ScienceWorkshop 700 and 750 interfaces, outputswitch( x )
switches the signal generator on/off based on the input value x. If
x =0, output is switched on. Otherwise, the output is switched off.
The switch controls either a DC output or AC function. Frequency, voltage, or amplitude are unaffected.
Sets the signal generator output voltage (or amplitude) to the result of x,
where x can be any expression. Assumes the signal generator is already on or in the
auto on/off position or that the output will manually be turned on or off.
- not(x) = 1 if x = 0, not(x) =
a < b = 1 if a is less than b, 0 otherwise
a > b = 1 if a is greater than b, 0 otherwise
DataStudio 1.9 has an entirely new curve fitting engine. Automatic fit success
has been improved for all fit types. Automatic fitting is now available for a user-defined fit function. Manual fitting is now available for
the linear fit. Errors for individual fit parameter results can now be reported for all fit types (not just
linear). Fit can optionally time-shift selected data to ensure success for certain fit types. Fit term locking is no longer a part of the algorithm.
Video In Workbooks
QuickTime (.mov) and MPEG (.mpg) movies can now be added to workbook pages on
both Windows-based PCs and Macs. Displays on a workbook page can now be linked to a movie on the page to allow data replay synchronized to the movie. An additional workbook tool appears that allows a movie file to be added to a workbook page. Movie files can also be dragged into a workbook page. QuickTime (.mov) and MPEG (.mpg) movies can be used on both. Windows version requires QT for Windows (which will be distributed with DS 1.9). Right-click on a movie to link it with one or more displays on the page and to set a data/movie synch time. Movies files are NOT copied into the workbook file. The workbook saves the movie file name/path and looks for the file when opening. Keep movies in the same directory as the workbook for maximum portability.
Multi-Measure Probe Detection
DataStudio automatically detects optional external sensor probes on multi-measure sensors (such as Temp-Light-Sound, pH/Temp, and Quad Temp) and treats them in the same way as PASPORT sensor connections (automatically adding the measurements to a display, displaying the
Photogate Timing for ScienceWorkshop Interfaces
Dragging and dropping photogates, laser switches, or a time of flight pad automatically adds useful timing measurements to the
experiment. This eliminates the need to define custom timers for pendulums, time of flight, collisions, and many other timing experiments. Custom timers can still be defined for any experiment.
experiment files for all common timing labs are now included with DataStudio in "eLabs/Photogate Timing".
Full-Featured Evaluation for new DataStudio Lite Users
A customer who installs DataStudio and chooses the Lite option (which requires no license key) now has immediate access to the full DataStudio feature set for the first 90 days after installation. After 90 days, the software will continue to operate with the reduced "Lite" feature set.
Graph/Table Sensor Data Point Deletion
Select one or more points of a run of sensor data in the graph (or rows in the table). Click the
"delete" (X) toolbar button (or press the "Delete" keyboard key). The points will be deleted from the data set. (A copy of the original data will be preserved to allow you to go back.) For manually entered data, the original data is deleted and a copy is NOT made.
Graph Predictive Sketch Tool
The graph has a new toolbar button that allows you to click and drag over the data area with the mouse to "sketch" a set of data. A set of data points can then be analyzed, displayed and calculated on just like any other DataStudio Data.
Table Date/Time Display
The table display can now show the date and time of each collected data point. This is retroactive for all data collected with DataStudio (going back to v1.0!). This mode is accessed by selecting the "Hours Minutes Seconds" format for the time units in the table settings dialog.
Advanced Number Display
The data properties dialog has been significantly enhanced to include a "numeric settings" page. This page allows complete control over how a data value is displayed. Features include fixed decimals (the only prior option), significant figures, scientific notation, and engineering notation. You can
automatically control if and when a number transitions into scientific notation. A preview list of values shows clearly how many different values will be displayed with the selected numeric settings
Run Color/Symbol Selection
The data properties dialog also includes a "visual properties" page for data runs. (You can reach this page directly by double-clicking a run in the data summary.) This page allows you to select any run for the selected measurement, and choose a specific color or data symbol for it. You can also set the color or symbol to be a default so that all runs (past and future) for that measurement will use the same symbol or color.
Click on the graph axis to change inputs:
You can now click the Y or X axis labels to change from one measurement to another. This effectively does the same thing as dragging a measurement from the data summary. The X axis click also offers a choice of "Time" to switch out of an XY graph.
Workbook Deletion Protection
When a workbook window is closed it is now hidden rather than deleted. To show it again - double click it in the summary list. To really delete a workbook, select it in the summary list and press the keyboard delete key.