How to plot LTP vs. time from data available in a matrix in the form of Date, time, LTP










0














I have data in 3 columns:(as shown below



  • Date Time LTP

  • 20180102 09:16 1800

  • ... ... ...
    I wanna plot it in R so that I get time on the x-axis and LTP on the y-axis. Since there are around 360 rows every day (every minute LTP changes), the x variable shall be date:time
    I am new to R and I need help in this. Thanks in anticipation









share|improve this question


























    0














    I have data in 3 columns:(as shown below



    • Date Time LTP

    • 20180102 09:16 1800

    • ... ... ...
      I wanna plot it in R so that I get time on the x-axis and LTP on the y-axis. Since there are around 360 rows every day (every minute LTP changes), the x variable shall be date:time
      I am new to R and I need help in this. Thanks in anticipation









    share|improve this question
























      0












      0








      0







      I have data in 3 columns:(as shown below



      • Date Time LTP

      • 20180102 09:16 1800

      • ... ... ...
        I wanna plot it in R so that I get time on the x-axis and LTP on the y-axis. Since there are around 360 rows every day (every minute LTP changes), the x variable shall be date:time
        I am new to R and I need help in this. Thanks in anticipation









      share|improve this question













      I have data in 3 columns:(as shown below



      • Date Time LTP

      • 20180102 09:16 1800

      • ... ... ...
        I wanna plot it in R so that I get time on the x-axis and LTP on the y-axis. Since there are around 360 rows every day (every minute LTP changes), the x variable shall be date:time
        I am new to R and I need help in this. Thanks in anticipation






      r gplots






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      asked Nov 12 at 4:16









      krishna

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          1 Answer
          1






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          oldest

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          0














          Try this:



          library(zoo)
          z <- read.zoo("myfile.dat", header = TRUE, index = 1:2, format = "%Y%m%d %H:%M", tz = "")

          # classic graphics
          plot(z)

          # ggplot2 graphics
          autoplot(z)


          Note



          To generate a file for the sample data provided in the question try this; however, with only one point you won't see anything on a line graph.



          cat("Date Time LTPn20180102 09:16 1800", file = "myfile.dat")





          share|improve this answer




















          • Thank you so much for your reply .. Yes it did help me ..however, since my data is stock data, i have no data points from (example) 20180101 15:30 to 20180102 09:08 .. and same every day ..so in such case it is simple interpolating between the two points. Is there a way to make the program understand that there are no data points there and it shall treat 20180102 09:08 as the next point on x-axis after 20180101 15:30 .. I am trying to figure out from google, but any help here would be greatly appreciated. thank you again.
            – krishna
            Nov 12 at 7:11










          • If you insert an NA between the valid points that will cause the line to be disconnected. Another approach to indicate this is to use plot(z, xaxt = "n") will omit X axis. Now use axis.break in the plotrix package.
            – G. Grothendieck
            Nov 12 at 12:29











          • And a third approach is plot(z, xaxt = "n", type = "n") . Now use lines twice to overlay on that empty chart each subset separately.
            – G. Grothendieck
            Nov 12 at 12:47











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          0














          Try this:



          library(zoo)
          z <- read.zoo("myfile.dat", header = TRUE, index = 1:2, format = "%Y%m%d %H:%M", tz = "")

          # classic graphics
          plot(z)

          # ggplot2 graphics
          autoplot(z)


          Note



          To generate a file for the sample data provided in the question try this; however, with only one point you won't see anything on a line graph.



          cat("Date Time LTPn20180102 09:16 1800", file = "myfile.dat")





          share|improve this answer




















          • Thank you so much for your reply .. Yes it did help me ..however, since my data is stock data, i have no data points from (example) 20180101 15:30 to 20180102 09:08 .. and same every day ..so in such case it is simple interpolating between the two points. Is there a way to make the program understand that there are no data points there and it shall treat 20180102 09:08 as the next point on x-axis after 20180101 15:30 .. I am trying to figure out from google, but any help here would be greatly appreciated. thank you again.
            – krishna
            Nov 12 at 7:11










          • If you insert an NA between the valid points that will cause the line to be disconnected. Another approach to indicate this is to use plot(z, xaxt = "n") will omit X axis. Now use axis.break in the plotrix package.
            – G. Grothendieck
            Nov 12 at 12:29











          • And a third approach is plot(z, xaxt = "n", type = "n") . Now use lines twice to overlay on that empty chart each subset separately.
            – G. Grothendieck
            Nov 12 at 12:47
















          0














          Try this:



          library(zoo)
          z <- read.zoo("myfile.dat", header = TRUE, index = 1:2, format = "%Y%m%d %H:%M", tz = "")

          # classic graphics
          plot(z)

          # ggplot2 graphics
          autoplot(z)


          Note



          To generate a file for the sample data provided in the question try this; however, with only one point you won't see anything on a line graph.



          cat("Date Time LTPn20180102 09:16 1800", file = "myfile.dat")





          share|improve this answer




















          • Thank you so much for your reply .. Yes it did help me ..however, since my data is stock data, i have no data points from (example) 20180101 15:30 to 20180102 09:08 .. and same every day ..so in such case it is simple interpolating between the two points. Is there a way to make the program understand that there are no data points there and it shall treat 20180102 09:08 as the next point on x-axis after 20180101 15:30 .. I am trying to figure out from google, but any help here would be greatly appreciated. thank you again.
            – krishna
            Nov 12 at 7:11










          • If you insert an NA between the valid points that will cause the line to be disconnected. Another approach to indicate this is to use plot(z, xaxt = "n") will omit X axis. Now use axis.break in the plotrix package.
            – G. Grothendieck
            Nov 12 at 12:29











          • And a third approach is plot(z, xaxt = "n", type = "n") . Now use lines twice to overlay on that empty chart each subset separately.
            – G. Grothendieck
            Nov 12 at 12:47














          0












          0








          0






          Try this:



          library(zoo)
          z <- read.zoo("myfile.dat", header = TRUE, index = 1:2, format = "%Y%m%d %H:%M", tz = "")

          # classic graphics
          plot(z)

          # ggplot2 graphics
          autoplot(z)


          Note



          To generate a file for the sample data provided in the question try this; however, with only one point you won't see anything on a line graph.



          cat("Date Time LTPn20180102 09:16 1800", file = "myfile.dat")





          share|improve this answer












          Try this:



          library(zoo)
          z <- read.zoo("myfile.dat", header = TRUE, index = 1:2, format = "%Y%m%d %H:%M", tz = "")

          # classic graphics
          plot(z)

          # ggplot2 graphics
          autoplot(z)


          Note



          To generate a file for the sample data provided in the question try this; however, with only one point you won't see anything on a line graph.



          cat("Date Time LTPn20180102 09:16 1800", file = "myfile.dat")






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 12 at 4:27









          G. Grothendieck

          145k9126231




          145k9126231











          • Thank you so much for your reply .. Yes it did help me ..however, since my data is stock data, i have no data points from (example) 20180101 15:30 to 20180102 09:08 .. and same every day ..so in such case it is simple interpolating between the two points. Is there a way to make the program understand that there are no data points there and it shall treat 20180102 09:08 as the next point on x-axis after 20180101 15:30 .. I am trying to figure out from google, but any help here would be greatly appreciated. thank you again.
            – krishna
            Nov 12 at 7:11










          • If you insert an NA between the valid points that will cause the line to be disconnected. Another approach to indicate this is to use plot(z, xaxt = "n") will omit X axis. Now use axis.break in the plotrix package.
            – G. Grothendieck
            Nov 12 at 12:29











          • And a third approach is plot(z, xaxt = "n", type = "n") . Now use lines twice to overlay on that empty chart each subset separately.
            – G. Grothendieck
            Nov 12 at 12:47

















          • Thank you so much for your reply .. Yes it did help me ..however, since my data is stock data, i have no data points from (example) 20180101 15:30 to 20180102 09:08 .. and same every day ..so in such case it is simple interpolating between the two points. Is there a way to make the program understand that there are no data points there and it shall treat 20180102 09:08 as the next point on x-axis after 20180101 15:30 .. I am trying to figure out from google, but any help here would be greatly appreciated. thank you again.
            – krishna
            Nov 12 at 7:11










          • If you insert an NA between the valid points that will cause the line to be disconnected. Another approach to indicate this is to use plot(z, xaxt = "n") will omit X axis. Now use axis.break in the plotrix package.
            – G. Grothendieck
            Nov 12 at 12:29











          • And a third approach is plot(z, xaxt = "n", type = "n") . Now use lines twice to overlay on that empty chart each subset separately.
            – G. Grothendieck
            Nov 12 at 12:47
















          Thank you so much for your reply .. Yes it did help me ..however, since my data is stock data, i have no data points from (example) 20180101 15:30 to 20180102 09:08 .. and same every day ..so in such case it is simple interpolating between the two points. Is there a way to make the program understand that there are no data points there and it shall treat 20180102 09:08 as the next point on x-axis after 20180101 15:30 .. I am trying to figure out from google, but any help here would be greatly appreciated. thank you again.
          – krishna
          Nov 12 at 7:11




          Thank you so much for your reply .. Yes it did help me ..however, since my data is stock data, i have no data points from (example) 20180101 15:30 to 20180102 09:08 .. and same every day ..so in such case it is simple interpolating between the two points. Is there a way to make the program understand that there are no data points there and it shall treat 20180102 09:08 as the next point on x-axis after 20180101 15:30 .. I am trying to figure out from google, but any help here would be greatly appreciated. thank you again.
          – krishna
          Nov 12 at 7:11












          If you insert an NA between the valid points that will cause the line to be disconnected. Another approach to indicate this is to use plot(z, xaxt = "n") will omit X axis. Now use axis.break in the plotrix package.
          – G. Grothendieck
          Nov 12 at 12:29





          If you insert an NA between the valid points that will cause the line to be disconnected. Another approach to indicate this is to use plot(z, xaxt = "n") will omit X axis. Now use axis.break in the plotrix package.
          – G. Grothendieck
          Nov 12 at 12:29













          And a third approach is plot(z, xaxt = "n", type = "n") . Now use lines twice to overlay on that empty chart each subset separately.
          – G. Grothendieck
          Nov 12 at 12:47





          And a third approach is plot(z, xaxt = "n", type = "n") . Now use lines twice to overlay on that empty chart each subset separately.
          – G. Grothendieck
          Nov 12 at 12:47


















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