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--- haas:spring2018:unix:projects:gtf0 [2018/04/09 15:30] – [Submit] wedge
+++ haas:spring2018:unix:projects:gtf0 [2018/04/09 19:39] (current) – [plotting a single line] wedge
@@ Line 25: / Line 25: @@
 For this project, we will be making use of the venerable **gnuplot** tool. Like many powerful tools we have encountered this semester, we seek only to scratch the surface, and start to familiarize ourselves with the powerful capabilities this resource offers us.
-Following will be some usage examples to help you get a
+Following will be some usage examples to help you get a feel for how to use the tool (barely scratching the surface of what it can do):
+====plotting a single line====
+===the data===
+<code>
+.0 430
+.5 120
+.0 431
+.5 600
+.6 610
+.9 620
+.0 432
+.0 500
+.0 510
+.5 900
+</code>
+===the gnuplot file===
+<code>
+set title 'Line'
+set xlabel 'x'
+set ylabel 'y (1/100)'
+set terminal png size 600,400
+unset key
+set tics out nomirror
+set border 3 front linetype black linewidth 1.0 dashtype solid
+set xrange [1:5]
+set xtics 1, .5, 5
+set mxtics 1
+set style line 1 linecolor rgb '#0060ad' linetype 1 linewidth 3
+plot 'line.data' using 1:($2/100) with lines linestyle 1 title 'data'
+</code>
+===generating the graph===
+<cli>
+lab46:~/src/gtf0$ gnuplot line.gp > ~/public_html/gtf0/line.png
+lab46:~/src/gtf0$ chmod 0604 ~/public_html/gtf0/line.png
+lab46:~/src/gtf0$ # view line.png in web browser
+</cli>
+===the graph===
+{{  http://lab46.g7n.org/~wedge/line.png  |line graph}}
+====plotting lines====
+===the data===
+<code>
+.0 430 110
+.5 120 125
+.0 431 130
+.5 600 150
+.6 610 160
+.9 620 192
+.0 432 100
+.0 500 340
+.0 510 450
+.5 900 700
+</code>
+===the gnuplot file===
+<code>
+set title 'Lines'
+set xlabel 'x'
+set ylabel 'y'
+set terminal png size 600,400
+set grid
+set key below center horizontal noreverse enhanced autotitle box dashtype solid
+set tics out nomirror
+set border 3 front linetype black linewidth 1.0 dashtype solid
+set xrange [0.9:5.7]
+set xtics 1, .5, 6
+set mxtics 1
+set style line 1 linewidth 4
+set style line 2 linewidth 1
+set style line 3 linewidth 2
+plot 'lines.dat' using 1:2 with lines linestyle 1 title 'line1', \
+     '' using 1:3 with lines linestyle 2 title 'line2', \
+     '' using 1:($2+$3) with lines linestyle 3 title 'sum'
+</code>
+===generating the graph===
+<cli>
+lab46:~/src/gtf0$ gnuplot lines.gp > ~/public_html/gtf0/lines.png
+lab46:~/src/gtf0$ chmod 0604 ~/public_html/gtf0/lines.png
+lab46:~/src/gtf0$ # view lines.png in web browser
+</cli>
+===the graph===
+{{  http://lab46.g7n.org/~wedge/lines.png  |lines graph}}
+====plotting a histogram====
+===the data===
+<code>
+march 5 55 20 30 40
+april 6 35 40 30 55
+may   7 45 50 60 70
+</code>
+===the gnuplot file===
+<code>
+set title 'Histogram'
+set xlabel 'x'
+set ylabel 'y'
+set terminal png size 600,400
+set grid
+set tics out nomirror
+set border 3 front linetype black linewidth 1.0 dashtype solid
+set xrange [-1:3]
+set xtics 1
+set yrange [0:80]
+set style line 1 linecolor rgb '#0060ad' linetype 1 linewidth 2
+set style histogram clustered gap 1 title offset character 0, 0, 0
+set style data histograms
+set boxwidth 1.0 absolute
+set style fill solid 5.0 border -1
+plot 'histogram.data' using 2:xtic(1) title 'cactus', \
+        '' using 3 title 'maple', \
+        '' using 4 title 'willow', \
+        '' using 5 title 'birch'
+</code>
+===generating the graph===
+<cli>
+lab46:~/src/gtf0$ gnuplot histogram.gp > ~/public_html/gtf0/histogram.png
+lab46:~/src/gtf0$ chmod 0604 ~/public_html/gtf0/histogram.png
+lab46:~/src/gtf0$ # view histogram.png in web browser
+</cli>
+===the graph===
+{{  http://lab46.g7n.org/~wedge/histogram.png  |histogram graph}}
 =====Your Task=====
 Your task for this project is as follows:
@@ Line 33: / Line 186: @@
     * from the [[/haas/spring2018/unix/projects/status|class status page]], scrapes:
       * the list of projects, the lowscore, average, median, and hiscore values of each of the evaluated projects
-        * places these values in columns (a projects column, a lowscore column, an average column, etc.) in a **gtf0.dat** file
+        * places these values in columns (a projects column, a lowscore column, an average column, etc.) in a **gtf0.data** file
     * from your **~/info/status/unix.projects** file in your home directory:
       * obtains the scores and totals of each of the evaluated unix projects
       * calculates the score (out of 100) of each individual project
-        * places these calculated scores as a final column in your **gtf0.dat** file
+        * places these calculated scores as a final column in your **gtf0.data** file
     * constructs a **gtf0.gp** gnuplot file that:
       * creates a graph title of "USER SEMESTER/DESIG class status"
@@ Line 116: / Line 269: @@
 *:gtf0:gtf0.sh no line in any file exceeds 80 characters in length [4/4]
 *:gtf0:gtf0.sh all custom variable name lengths at least 4 symbols [4/4]
+*:gtf0:gtf0.data contents arranged by column with headings [4/4]
+*:gtf0:gtf0.gp sets proper graph title and axis labels [4/4]
+*:gtf0:gtf0.gp sets proper image format and resolution [4/4]
+*:gtf0:gtf0.gp sets proper axis range, sets up a grid [4/4]
+*:gtf0:gtf0.gp displays a valid key outside of graph area [4/4]
+*:gtf0:gtf0.gp grabs data from gtf0.data and sets x tics from it [4/4]
+*:gtf0:gtf0.gp uses different line colors and thicknesses [4/4]
+*:gtf0:gtf0.gp identifies each line by category [4/4]
 *:gtf0:gtf0.sh operates according to specifications [5/5]
 *:gtf0:gtf0.sh logic is organized and easy to read [5/5]

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