Put a point on which you want to obtain a value.
#Datathief windows series#
A selected series of points is available for the edit.Īfter selecting the "Point-setting button" ( Figure 1(f)), choose a series from an image combo box ( Figure 1(h)). There are two modes to obtain values on the image. Input the parameters for the coordinate transformation: dpi of the image, coordinates of a datum point after the transformation, and values per 1 cm after the transformation. The program allows you to drag the point. (b) Specification of the dpi of a chart image and a datum point on the imageĪfter clicking on the "Specification of a datum point and dpi button" ( Figure 1(d)), click on the image to specify a datum point.
The user can save the parameters by clicking on the "Save settings" button. Input coordinates after the coordinate transformation. After clicking, these points can be moved by dragging. (a) Specification of two points on the imageĪfter selecting the "Specification of two data point button" ( Figure 1(c)), click on the image to specify two data points in the order: upper left and lower right. Either of the two methods shown below could be selected. Next, setting of a reference frame is needed for the measurement. A progress bar shows how much the process passed. After specifying two data points, click the "execute" button to rotate the image. Two data points must be specified from the left side on the line that you make horizontal. The "Image rotation button" ( Figure 1(e)) enables the adjustment of the angle of the image. The image can also be brought to this program from clipboard using ® menu. After "GetValue" is started, the image file is loaded by choosing ® menu. The image must be saved as "bmp" or "jpg" format. The buttons for magnification ( Figure 1(a)) or reduction ( Figure 1(b)) are available in each procedure.įirst, a chart image is inputted into to a computer with a scanner by using another program that a user usually employs for inputting the image. The left button on the mouse is used for a click in the following explanation unless the clicking side is specified. A series of procedures to obtain numerical values is shown below.
Figure 1 shows a screen shot of "GetValue". This program has been written using information on the web and some books about Visual Basic.
#Datathief windows windows#
The program was tested with Windows 95, 98, Me and 2000 installed in IBM/PC-AT Compatibles. We used a PC-9821 machine (NEC) in which Microsoft Windows 2000 was installed for developing "GetValue" with the Microsoft Visual Basic version 6(SP3). The program has been written in Visual Basic, and runs on the computer with Windows 95, 98, Me and 2000. In the present report, we have made a graph digitizer named "GetValue" which assists in electrochemical analyses. It is useful to incorporate the analysis subroutine for a specific use into this kind of programs. There are some commercial packages for these purposes: Digimatic and Fexitrace, and shareware: TechDig and DataThief II. It also requires the same procedures to use the data drawn from articles and reference books for comparison with the experimental data obtained in one's own laboratory. Troublesome procedures are needed - the numerical data have to be read out with a ruler on a chart, and inputted into the computer - for a user to use the data recorded on a chart paper for analysis by equations or to draw a chart (figure) together with another series of data. However, it is not easy for most laboratories in universities and colleges to exchange old instruments for new ones because of a financial problem, so that old instruments and new ones will intermingle in the laboratory for the time being.
#Datathief windows software#
Needless to say, it is important for an instrument to have a function that enables transfer of the numerical data to another software since the obtained data should often be analyzed by equations and compared to another series of data. Most instruments for laboratories are now operated by computer, and the measured data can be transferred to another software. A research laboratory enjoys the merit of the low price. In recent years, one out of five people in Japan has a computer.
The rapid progress of a personal computer has reduced its price. Hidenobu SHIROISHI, Yuuki KABURAGI, Michiko SEO, Sumio TOKITA and Masao KANEKO GetValue for Windows - Graph Digitizer Equipped with Electrochemical Analyzer
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