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PlotData 1.3: A Plotter with Analysing Data by Dr. Weiguang Huang Dept. Analytical Chemistry, University of New South Wales, Kensington, Sydney, NSW 2033, Australia E-mail: w.huang@unsw.edu.au Phone: 61-2-697-4643, Fax: 61-2-6622835 Copyright (C) 1991-1993 8 April 1993 Please report any error or suggestion to the author. Contents 1. Introduction 2. Shareware, Student and Advanced Versions 3. Main Menu 3.1 Read Menu 3.2 Graph Menu 3.2.1 Plot 3.2.2 Zoom 3.2.3 Crosshairs 3.2.4 Axes 3.2.5 Clear 3.2.6 Text 3.2.7 Color 3.3 Enter Menu 3.4 View Menu 3.5 Anal Menu 3.5.1 Differentiate 3.5.2 Integrate 3.5.3 Average 3.5.4 Peak 3.6 DOS 3.7 Mode Menu 3.7.1 Set Monitor Display Mode 3.7.2 Save 3.8 Help 4. Print 5. Interface 5.1 With SymbMath 5.2 With CurFit 6. References 1. Introduction PlotData is a software package consisting of a plotter with data analysis capability. With PlotData, data can be plotted on the screen, viewed, edited, analysed, differentiated, integrated, calculated, and reproduced graphically. Many sets of data can be overlapped to solve systems of equations graphically. Users can zoom in and out within graphics. There is an interactive menu and on-line help in an editable text file. It can be interfaced with other software, such as SymbMath (a symbolic calculator) or CurFit (separation of overlapping peaks). PlotData can read data from these software packages, without any modification, in the BAS-100 instrument format and in many other data formats. If SymbMath is interfaced with PlotData, SymbMath produces the data table of functions, and PlotData plots from the table. So SymbMath seems to plot the functions. This interface can be used to solve equations graphically. It runs on an IBM-PC under MS-DOS with 100 KByte free memory, monitors such as CGA, EGA, or Hercules, and many kinds of printers. It has three versions: shareware, student and advanced. Its shareware version (Plotd13A.ZIP) is available from the Plot directory in SIMTEL20 archives on many anonymous FTP sites (wsmr-simtel20.army. mil, garbo.uwasa.fi, rana.cc.deakin.oz.au, etc.) or by e-mail from listserv@vm1.nodak.edu, listserv@ndsuvm1.bitnet. 2. Shareware, Student and Advanced Versions Please read the document file PlotData.DOC and all *.TXT files before running PlotData. You should print them out if you need the printed documents. Please follow examples in the document to practise. Type PlotData on the MS-DOS prompt to run. PlotData has three versions: Shareware Version A, Student Version B and Advanced Version C. ---------------------------------------------------------------------- Version Class Data point Price Shareware A 20 US$20 or AU$25 Student B 100 US$40 or AU$50 Advanced C 1000 US$60 or AU$75 ---------------------------------------------------------------------- Upgrade same 50% ---------------------------------------------------------------------- Multiple copies discount is less 20% for each --------------------------------------------------------------------- Other foreign money is accepted at the current exchange rate. You must provide the copy of your license or license number for upgrades. Non-registered users are granted a limited license to try the shareware version for a period of two weeks. After the trial period you are required to register and to pay the registration fee. If you send the author your payment by cheque, money order or bank draft that must be drawn in Australia, you will get the latest version. If you sign the license (see the LICENSE.TXT file) and send it to the author, you will be legal users and get upgrades on discount. If you write a paper about this software on publication, you will get a free upgrade. If you have any problem or advice, please feel free to write to the author. 3. Main Menu PlotData provides an easy-to-use menu, so users only need to choose a number from the menu. Each menu has its default value. Users hit the <RETURN> or <ENTER> key to get the default value. This default value is usually 0 (i.e. 0=exit). The main menu has the following choices: 0=exit, 1=read, 2=graph, 3=enter, 4=view, 5=anal, 6=DOS, 7=mode, 8=help 3.1 Read Menu This menu reads data from a data file. It has the following choices: 0=exit, 1=x,y, 2=SymbMath, 3=BAS-100, 4=x,y,blank, 5=x,y1,y2,... PlotData can read data in these data formats: 1=x, y 2=SymbMath 3=BAS-100 4=x,y,blank 5=x,y1,y2,... The format 1=x,y: ----------------- 1, 1.1 2, 2.1 3, 3.1 ------------------ The format 2=SymbMath: ----------------------- string 1, 1.1 2, 2.1 3, 3.1 ----------------------- The format 3=BAS-100: -------------------------- string : string # 1 1.1 2 2.1 3 3.1 * --------------------------- The format 4=x,y,blank: ------------------------ 1, 1.1 2, 2.1 3, 3.1 -------------------------- The format 5=x,y1,y2,... : ---------------------------- 1, 1.1, 1.2 2, 2.1, 2.2 3, 3.1, 3.2 ------------------------------ 3.2 Graph Menu The graph menu has the following choices: 0=exit, 1=plot, 2=zoom, 3=crosshairs, 4=axes, 5=clear, 6=text, 7=color 3.2.1 Plot This option plots data. When you are viewing the graphics screen, you will see a cross somewhere on the screen. On a new screen it appears in the upper-right-hand corner. This is the crosshairs. The coordinates of the center of the crosshairs are printed at the lower-right-hand corner of the screen. You can move the crosshairs with the cursor (arrow) keys. Try it, and see how the coordinates change. You can change the step lenghth of the crosshairs movements (see Section 3.2.3). By using Crosshairs, you can locate a point and/or zoom the graph: (1) The crosshairs are useful for locating the intersections of curves or points where graphs cross the axes. When users move the crosshairs by an arrow key, the crosshairs value in X-Y axes will automatically change in (x,y) = (xxx, yyy). (2) to zoom the graph: move the crosshairs to a place which is a corner of a rectangle, hit the <Ins> key, move the crosshairs to another place which is another corner of the rectangle, and hit the <Del> key. The graph within the rectangle will become large. There are other two ways to zoom the graph: (1) hit the <+> key to zoom in or the <-> key to zoom out within graphics one step. (2) go to the Zoom option. Table 1 Key Function ------------------------------------------------------------------ Key Function <- move left one step -> move right one step Up move up one step Down move down one step Home move both left and up one step Pg Up move both right and up one step End move both left and down one step Pg Dn move both right and down one step - zoom out one step + zoom in one step Ins a corner of a rectangle for zooming in Del another corner of the rectangle for zooming in ------------------------------------------------------------------ 3.2.2 Zoom The graph will zoom to special X-Y axes values that users provide. 3.2.3 Crosshairs Users can change the step lenght of the crosshairs movements by changing the X-rate or Y-rate value. The default values of X-rate and Y-rate are 0.01. The X-rate value of 0.01 means to move the crosshairs from the left to the right side (or from right to left) of the graph screen by 100 (1/0.01 = 100) steps. The maximum rate is 1. The Y-rate value is similar to the X-rate value. 3.2.4 Axes This option plots X-Y axes on origin. 3.2.5 Clear This option clears the graphics screen only. 3.2.6 Text This option tells the program to go to a text mode, and to clear all graph and text. 3.2.7 Color This option changes the curve color. The default value is 1. 3.3 Enter Menu Users enter data from keyboard. 3.4 View Menu Users can view any range of data, e.g. all data points, or from 4th data point to 10th data point. 3.5 Anal Menu The anal menu has the following choices for analysing data: 0=exit, 1=differentiate, 2=integrate, 3=average, 4=peak 3.5.1 Differentiate This option differentiates data and displays a differentiated curve. 3.5.2 Integrate This option integrates data and displays an integrated curve. 3.5.3 Average This option calculates X average and Y average values. 3.5.4 Peak This option finds peaks, and outputs the number of peaks, and the peak location and height. 3.6 DOS Users can go to the DOS shell for executing any DOS command or another program. After execution, type EXIT to return to the main menu. 3.7 Mode Menu The mode menu has the following choices: 0=exit, 1=set, 2=save 3.7.1 Set This option is to set a monitor display mode. You must set a suitable mode for your monitor before you plot, otherwise you will get ERROR when you plot. The default value is 1. Table 2 Monitor Display Mode ---------------------------------------------------------- Mode Monitor Resolution 0 text 1 CGA, EGA, VGA, MCGA 320x200x16 2 as 1 640x200x4 3 Hercules 720x348x1 4 PC-M24, M240, M28, M280, 640x400 M380, M380/c/t, PC6300 7 EGA, VGA 320x200x16 8 EGA, VGA 640x200x16 9 EGA, VGA 640x350x64 10 Monochrome, EGA, VGA 640x350x1 11 MCGA, VGA 640x480x256 12 VGA 640x480x256 13 VGA 320x200x256 ------------------------------------------------------------ Note that if your monitor is Hercules, you must load the MSHERC.COM program as a TRS program before you run PlotData, otherwise you will get ERROR when you plot. 3.7.2 Save This option saves your choice of the monitor display mode into the PlotData.Ini file. When you run the program next time, it will automatically load the choice from the PlotData.Ini file. 3.8 Help The on-line help displays one screen page each time. Hit any key to display the next page, except for <Ctrl>C which interrupts the help. 4. Print Press the <Print Screen> key to print the graph on a printer. 5. Interface PlotData can be interfaced with many software, e.g. SymbMath, CurFit, etc. 5.1 With SymbMath The SymbMath software is a symbolic calculator. --------------------------------------------------------------------- # The plot function package plot.sm # plot(x^2, x) # plot the function of x^2 # plot(x^2, x,-6,6) # plot the function of x^2 from x=-6 to x=6 # end output=off plot(y_,x_,x1_,x2_,dx_) := block(openfile('symbmath.out'), table(y,x,x1,x2,dx), closefile('symbmath.out'), system(plotdata)) plot(y_,x_,x1_,x2_) := plot(y,x,x1,x2,(x2-x1)*0.5) plot(y_,x_) := plot(y,x,-5,5,0.5) output=on end ---------------------------------------------------------------------- If SymbMath is interfaced with the software PlotData, SymbMath produces the data table of functions, and PlotData plots from the table. So SymbMath seems to plot the function. This interface can be used to solve equations graphically. In the plot package 'plot.sm' the funcion plot(y, x, x1, x2, dx) first open a file 'SymbMath.Out' for writing, then write the data table of the function y into the file 'SymbMath.out', then close the file, and finally automatically call the software PlotData to plot. After it exits from PlotData, it automatically return to SymbMath. The functions plot(y, x) plot(y, x from xmin to xmax) call the function plot(y,x,x1,x2,dx) e.g. plot x^2. Input: plot(x^2, x) end in the software PlotData, just select the option to read the file 'SymbMath.out' and to plot. PlotData read the data in the SymbMath format without any modification (and in many data format). In PlotData, in the main menu: 1 <Enter> in the read menu: 2 <Enter> <Enter> in the main menu: 2 <Enter> in the graph menu: 1 <Enter> where <Enter> is the <Enter> key. Refer to PlotData for detail. Note that if your monitor is Hercules, you must load the MSHERC.COM program as a TRS program before you run PlotData. Otherwise you will get Error when you plot. 5.2 With CurFit The CurFit software is to separate overlapping peaks into individual peaks. If PlotData is interfaced with the CurFit software, it can display overlapping and individual peaks. 6. References [1] Huang, W., Proceedings of the workshop on symbolic and numeric computation, Helsinki University, Finland, 1991, p 185-186. [2] Huang, W., Int. J. Math. Educ. Sci. Tech., 1992, 23(1), 160-165. [3] Microbit, IEEE Micro, 1992, 12(1), 76. [4] Microbit, IEEE Micro, 1992, 12(3), 80. [5] Huang, W., Abs. Amer. Math. Soc., 1992, 13(3), 343-344. [6] Huang, W., Abs. Amer. Math. Soc., 1992, 13(5), in press. [7] Huang, W., Abs. Amer. Math. Soc., 1992, 13(6), in press. [8] Huang, W., SIGSMALL/PC Notes, 1992, 18(1&2), 63-64. [9] Long, G., Australian PC World, 1992, June, 117-119.