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Fabricar: Delta Electronics Tamaño del archivo: 658.08 kb Nombre del archivo: 120983a1-af79-4a79-8811-457a099f02b1.pdf Idioma del manual:

You will be prompted for a name and Disk location. ¦ Press < <<<<> >>>> or Tab to survey the subdirectory in which your file will be saved. Specify a different name from any of these to create a new file, or select one of the existing files (which will then be overwritten). Restoring a configuration ¦ In the SunData program on the Workabout, proceed to Menu, File, RestoreConfig'n. Press < <<<<> >>>> or Tab to survey the list, and then select the .cfg file that you want to restore. Data files A data file is automatically opened whenever you enter SunData. The initial default file name is A:\DATA.PRN. When you take readings, they are appended to this file, that is to say the new readings are added to the end of it, and do not overwrite it. The value of this feature will become apparent when you want to alternate between plots with different measurement displays. Your data files will be easier to read and process if they contain only measurements of one type. However, there is absolutely no restriction on what types of readings a data file can accept. When you switch off, the file is automatically saved. You cannot forget to save, and thereby lose readings. When you switch on again, the same file is open ready to receive more data. There is no "data file close" command. Changing the data file If you want to store data in a different file (or change the file type from .PRN to .CSV) at any time, you must specify a different filename and type (and location) for it. ¦ Select Menu, File, Data storage, Enter for the appropriate dialog box. You can either create a new filename, or select an existing file to append the data to it. Don't forget that a Configuration contains the filename of the data file it uses. When changing from plot to plot, you may prefer simply to restore a different configuration. SunScan User Manual v 1.05 More Psion and file handling notes • •••• 37 Displaying data files on your PC As soon as you have transferred data files from the Workabout to your PC (or have created them on a portable PC) you will want to analyse and print them for your records. The .PRN file The .PRN file format contains ASCII characters which can be read by a wide range of text reading programs, and by some spreadsheets. An example printout is shown below. Created by SunData for Workabout v0.11 Title :Demonstration Location :Burwell, Cambridge Latitude :52.2N Longitude :0.4W 1996-05-19 Local time is GMT+1 Hrs SunScan probe emulator Ext sensor:BFS Leaf Angle Distn Parameter: 1.5 Leaf Absorption : 0.85 Group 1 :Presentation Time Plot Sample Trans-Spread Incid-Beam Zenith LAI Notes mitted ent frac Angle 15:51:12 1 1 270.9 0.13 2000.0 0.65 46.5 2.7 Notes appear here. 15:51:59 1 2 189.6 0.14 2000.0 0.65 46.6 3.2 15:52:08 1 3 1047.5 0.15 2000.0 0.65 46.6 0.8 15:52:16 1 4 63.4 0.14 2000.0 0.65 46.6 4.7 15:52:24 1 5 1225.3 0.15 2000.0 0.65 46.6 0.6 Average of 5 readings: Incident light: 2000.0 Transmitted fraction:0.28 LAI: 2.4 The .CSV file The Comma Separated Value format is a common format where ASCII characters are separated into fields by commas, and text is identified by being enclosed in "...". This greatly simplifies importing the files into spreadsheets for further analysis and printout. The example below was created in Microsoft Excel 5.0 Created by SunData for Workabout v0.11 Title : Demonstration2 Location : Burwell, Cambridge Latitude : 52.0N Longitude : 0.1W 19/05/96 Local time is GMT+1 Hrs SunScan probe emulator Ext sensor: None Leaf Angle Distn Parameter: 2.5 Leaf Absorption : 0.9 Group 1 : Presentation2 Time Plot Sample Trans-Spread Incid-Beam Zenith LAI Notes mitted ent frac Angle 15:56:54 1662.4 0.37 Beam Fraction measm't 15:57:54 1 1 754.2 0.15 47.5 0.9 15:58:00 1 2 142.9 0.15 47.5 2.9 15:58:05 1 3 203.4 0.15 47.5 2.5 15:58:09 1 4 255.4 0.17 47.5 2.2 15:58:15 1 5 701.4 0.13 47.5 1 Average of 5 readings: Incident light: 1662.4 Transmitted fraction 0.25 LAI 1.9 38 • •••• More Psion and file handling notes Document code: SS1-UM-1.05 Data file layouts and data groups If you want to get a good idea of how the data files will look, you can run the PC SunData program in the emulator mode. The general presentation of the results on screen will be similar to that in the eventual data file. The one major exception to this is in the All mode when the 64 individual photodiode readings are listed. On the PC screen they are shown as 4 rows of 16 values, whereas in the .CSV data files they occupy 64 adjacent columns (from handle to tip of the probe) to the right of the notes field. A single data file can contain a mixture of layouts. The column headings will be different for different combinations of equipment (BFS or not) and measurement (LAI or PAR or All) that you have chosen. Each time there is a change, the headings and titles will be revised to start a new group and give you a complete "audit trail" for your measurements. Each group contains readings with exactly the same settings. When a new group is started, you can ...

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