DataReader DataReader - Reads data from a graph and also exports them to ASCII file.
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read graph export read data read graph export to ASCII

DataReader Description

DataReader - Reads data from a graph and also exports them to ASCII file. Data Reader is a scientific application that allows you to read the data from a graph and export to an ASCII file for further processing. For instance, if you have a graph in digital format (e.g. a PICT file containing a digitized version of a figure or a screen capture of a figure in a publication), you can extract the data using Data Reader to use it in in a spreadsheet.Please remember that you must always acknowledge the author(s) if you use data that is not originally yours.Main features of DataReader:Obtain a digitized version of the graph of interest. If you have the graph on paper, you can simply digitize it with a scanner. If the graph is in a publication that is available electronically (e.g. PDF), you can open it and use the screen capture key-combination on the Macintosh (shift-command-3 and shift-command-4 on MacOS 9 and later, including OS X) to capture a PDF/TIFF/PICT file of the screen. The best format is PDF on OS X, but any other format that Quicktime can read be fine ( GIF, PNG, TIFF, SGI, BMP, JPEG, to name a few). If you do not have Quicktime, you can only open PICT files.Once the file is open, set the X and Y axes. By default, they are set along the left and bottom edge of the window, which is highly likely not what you want. Select either one axis in the data menu. A check mark appears on the left of the menu item, indicating that you can now click, hold and drag the mouse in the window to indicate where the axis is (minimum to maximum). Repeat the operation for the other axis. If the picture is larger than the window, scroll bars will be present. Dragging outside the window will scroll to that position.You can set the scale in the Parameters section of the Data menu. The X and Y minima and maxima are used to scale the data to the appropriate values when exporting. The default is 0 to 1, which simply means that your data is normalized.Other preferences are accessible in the Preferences menu (the Apple Menu on OS X, the Edit menu on OS 9).Click on the points on the graph. The point is set when you let go of the mouse button. You can drag the point around, you can also drag it outside the window to scroll. If you want to remove the last point, select Undo in the edit menu. If you want to remove all points, select Clear from the edit menu.When done, select the Export item from the Data menu. Select a file name. By default, the name will be the name of the graphic file with ".dat" appended. The creator of the file is set to your choice in the Preferences, but you can open it with anything that reads text files. What's New in This Release: Corrected interface. Added the possibility of scroll when dragging points. Corrected a bug where axes would be incorrectly set when view was scrolled. Added possibility of using humongous files (more than 16 000 pixels wide). Can now read PDF files (i.e. Mac OS X screenshots).

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