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  3. Suggestions for graphing software...

Suggestions for graphing software...

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data-structureshelp
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  • C Chris C B

    Thanks, but I really, realy, realy do not want to write one more line of code just to display the data just one time.

    S Offline
    S Offline
    S Houghtelin
    wrote on last edited by
    #9

    So, what your really, realy, realy looking for is some CODZ PLZ URGNTZZ? :laugh:

    It was broke, so I fixed it.

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    • S S Houghtelin

      So, what your really, realy, realy looking for is some CODZ PLZ URGNTZZ? :laugh:

      It was broke, so I fixed it.

      C Offline
      C Offline
      Chris C B
      wrote on last edited by
      #10

      Nah! I don't need no CODZ PLZ URGNTZZ. Don't really like the stuff. I am actually having poached salmon in a lemon sauce tonight. :laugh:

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      • C Chris C B

        Nah! I don't need no CODZ PLZ URGNTZZ. Don't really like the stuff. I am actually having poached salmon in a lemon sauce tonight. :laugh:

        S Offline
        S Offline
        S Houghtelin
        wrote on last edited by
        #11

        Is that with real lemons?

        It was broke, so I fixed it.

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        • C Chris C B

          … preferably free, but cheap is good too. All I want to do is set up an X axis, set up a Y axis, and plot a line-scatter graph. It seems Excel can't do this with non-linear X values on a linear X axis - or I can't coerce it to do so. Either way, I have given up struggling with it, to the point where I am prepared to drop some valuable beer vouchers on the problem. If anyone has any suggestions, I would be very glad to hear them.

          F Offline
          F Offline
          Foothill
          wrote on last edited by
          #12

          I just plugged two sets of random numbers into Excel (2013) and produced a proper scatter plot. I followed these steps to get the trend line: trendline example. Is your data set too big for Excel?

          if (Object.DividedByZero == true) { Universe.Implode(); }

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          • S S Houghtelin

            Is that with real lemons?

            It was broke, so I fixed it.

            C Offline
            C Offline
            Chris C B
            wrote on last edited by
            #13

            Nah! Furniture polish - it's cheaper.

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            • C Chris C B

              Nah! Furniture polish - it's cheaper.

              S Offline
              S Offline
              S Houghtelin
              wrote on last edited by
              #14

              Chris C-B wrote:

              Nah! Furniture polish - it's cheaper.

              :laugh: plus if you're grilling, you get the added bonus of that flame thrower touch of excitement, the kids will love it!

              It was broke, so I fixed it.

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              • C Chris C B

                … preferably free, but cheap is good too. All I want to do is set up an X axis, set up a Y axis, and plot a line-scatter graph. It seems Excel can't do this with non-linear X values on a linear X axis - or I can't coerce it to do so. Either way, I have given up struggling with it, to the point where I am prepared to drop some valuable beer vouchers on the problem. If anyone has any suggestions, I would be very glad to hear them.

                K Offline
                K Offline
                Kirill Illenseer
                wrote on last edited by
                #15

                Scilab seems like the way to go. Several of my scientific co-workers use that for dealing with data sets doing all kinds of stuffs that physics does with data, including non-linear axes.

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                • C Chris C B

                  … preferably free, but cheap is good too. All I want to do is set up an X axis, set up a Y axis, and plot a line-scatter graph. It seems Excel can't do this with non-linear X values on a linear X axis - or I can't coerce it to do so. Either way, I have given up struggling with it, to the point where I am prepared to drop some valuable beer vouchers on the problem. If anyone has any suggestions, I would be very glad to hear them.

                  L Offline
                  L Offline
                  Lost User
                  wrote on last edited by
                  #16

                  You could have a look at GNUplot, it certainly meets your requirement for free.

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                  • C Chris C B

                    … preferably free, but cheap is good too. All I want to do is set up an X axis, set up a Y axis, and plot a line-scatter graph. It seems Excel can't do this with non-linear X values on a linear X axis - or I can't coerce it to do so. Either way, I have given up struggling with it, to the point where I am prepared to drop some valuable beer vouchers on the problem. If anyone has any suggestions, I would be very glad to hear them.

                    P Offline
                    P Offline
                    Pete Kelley
                    wrote on last edited by
                    #17

                    I don't have a solution to offer, but I'm wondering if you could give some usable example data?(rigged-up or otherwise) I certainly recognize that this simple need has arisen more times than I can remember. It's time to dabble in tool-building. This kind of issue is a lot like when I only want to make a simple chicken-scratch sketch using old-school Paint but the system I happen to be using only has a major drawing program that takes too-long/forever to load up. Or I just want to type a sentence and a bloated word processor starts loading. Great to have some of the suggestions - checking out GNUPlot and some of the free-or-inexpensive options.

                    Pete K.

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                    • C Chris C B

                      Thanks, but I really, realy, realy do not want to write one more line of code just to display the data just one time.

                      S Offline
                      S Offline
                      S Houghtelin
                      wrote on last edited by
                      #18

                      So, how was the salmon? ;) Anyway I got 'yer Codez. It's like 6 lines of code.

                      # Install & Load Library
                      if (!require("readxl")) install.packages("readxl")
                      library("readxl")

                      Choose & Read Excel file, the 2 denotes the desired sheet number.

                      my_data <- read_excel(file.choose(), 2)

                      Extract data from the desired columns. RStudio will provide drop-down with column names.

                      Ydata <- my_data$Column_With_Ydata
                      Xdata <- my_data$Column_With_Xdata

                      Plot data

                      plot(Ydata, Xdata)

                      As with any code you can get as fancy as you want, but for a one time look see...

                      It was broke, so I fixed it.

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                      • C Chris C B

                        … preferably free, but cheap is good too. All I want to do is set up an X axis, set up a Y axis, and plot a line-scatter graph. It seems Excel can't do this with non-linear X values on a linear X axis - or I can't coerce it to do so. Either way, I have given up struggling with it, to the point where I am prepared to drop some valuable beer vouchers on the problem. If anyone has any suggestions, I would be very glad to hear them.

                        M Offline
                        M Offline
                        mngerhold
                        wrote on last edited by
                        #19

                        At the risk of sounding dumb, I can't see the problem - what are 'non-linear X values' ? You can't just mean they are at unequal X-intervals, because surely that is trivial, even for Excel?

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                        • C Chris C B

                          … preferably free, but cheap is good too. All I want to do is set up an X axis, set up a Y axis, and plot a line-scatter graph. It seems Excel can't do this with non-linear X values on a linear X axis - or I can't coerce it to do so. Either way, I have given up struggling with it, to the point where I am prepared to drop some valuable beer vouchers on the problem. If anyone has any suggestions, I would be very glad to hear them.

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                          C Offline
                          cmkrnl
                          wrote on last edited by
                          #20

                          I found ZedGraph maybe 10 years ago, and have driven it with C# for countless graphing needs since then.

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                          • C Chris C B

                            … preferably free, but cheap is good too. All I want to do is set up an X axis, set up a Y axis, and plot a line-scatter graph. It seems Excel can't do this with non-linear X values on a linear X axis - or I can't coerce it to do so. Either way, I have given up struggling with it, to the point where I am prepared to drop some valuable beer vouchers on the problem. If anyone has any suggestions, I would be very glad to hear them.

                            J Offline
                            J Offline
                            jcmaida
                            wrote on last edited by
                            #21

                            convert non-linear to linear via log base 10, base 2, etc.

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                            • C Chris C B

                              Thanks for that - it looks useful, but I need something that I can import Excel or CSV data into. I have a LOT of data! :sigh:

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                              T Offline
                              thewazz
                              wrote on last edited by
                              #22

                              Add that info to your OP.

                              1 Reply Last reply
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                              • F Foothill

                                I just plugged two sets of random numbers into Excel (2013) and produced a proper scatter plot. I followed these steps to get the trend line: trendline example. Is your data set too big for Excel?

                                if (Object.DividedByZero == true) { Universe.Implode(); }

                                C Offline
                                C Offline
                                Chris C B
                                wrote on last edited by
                                #23

                                The scatter graph works fine for X-Y points, but the data collection points are equally spaced on the graph, where they are, in fact, non-linear to the point of being random. They are closely spaced at the start of the X-axis, becoming sparser further along - but they are essentially just points where data had been collected, and adhere to no mathematically defined function. I want to impose a linear X-axis, say from 0 to 100, and have the graph points plotted along that linear axis. If I just use the X-Y data in a plot, then the X-axis is divided into equidistant points for the X value and the Y value plotted above it. If I add a third column of data to represent the X-axis, Excel accepts it but then draws two graphs, one for the X values and one for the Y values. If it were not for the 11,000 odd data points, I would use a piece of graph paper...

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                                • K Kirill Illenseer

                                  Scilab seems like the way to go. Several of my scientific co-workers use that for dealing with data sets doing all kinds of stuffs that physics does with data, including non-linear axes.

                                  C Offline
                                  C Offline
                                  Chris C B
                                  wrote on last edited by
                                  #24

                                  Thanks, I will check it out.

                                  1 Reply Last reply
                                  0
                                  • L Lost User

                                    You could have a look at GNUplot, it certainly meets your requirement for free.

                                    C Offline
                                    C Offline
                                    Chris C B
                                    wrote on last edited by
                                    #25

                                    Having just Bingled that, it looks like it could be a winner - thanks.

                                    1 Reply Last reply
                                    0
                                    • P Pete Kelley

                                      I don't have a solution to offer, but I'm wondering if you could give some usable example data?(rigged-up or otherwise) I certainly recognize that this simple need has arisen more times than I can remember. It's time to dabble in tool-building. This kind of issue is a lot like when I only want to make a simple chicken-scratch sketch using old-school Paint but the system I happen to be using only has a major drawing program that takes too-long/forever to load up. Or I just want to type a sentence and a bloated word processor starts loading. Great to have some of the suggestions - checking out GNUPlot and some of the free-or-inexpensive options.

                                      Pete K.

                                      C Offline
                                      C Offline
                                      Chris C B
                                      wrote on last edited by
                                      #26

                                      Pete Kelley wrote:

                                      This kind of issue is a lot like when I only want to make a simple chicken-scratch sketch using old-school Paint but the system I happen to be using only has a major drawing program that takes too-long/forever to load up. Or I just want to type a sentence and a bloated word processor starts loading.

                                      'Twas always thus! In fact, although I said I didn't want to write a line of code, I am now thinking of writing an add-on for access to solve precisely this problem.

                                      1 Reply Last reply
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                                      • M mngerhold

                                        At the risk of sounding dumb, I can't see the problem - what are 'non-linear X values' ? You can't just mean they are at unequal X-intervals, because surely that is trivial, even for Excel?

                                        C Offline
                                        C Offline
                                        Chris C B
                                        wrote on last edited by
                                        #27

                                        See my reply to Foothill above. If you know of how it can be done, I would love to hear about it.

                                        M 1 Reply Last reply
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                                        • J jcmaida

                                          convert non-linear to linear via log base 10, base 2, etc.

                                          C Offline
                                          C Offline
                                          Chris C B
                                          wrote on last edited by
                                          #28

                                          Regrettably, although the X data points are non-linear, they are not non-linear in a predictable way, rather a random spacing, more densely pack at the root of the X-axis.

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