From fc9fc4022f15a425c7b2d92c406ff142e88d8fec Mon Sep 17 00:00:00 2001
From: erentar <erentar2002@gmail.com>
Date: Fri, 21 Jun 2024 02:03:27 +0200
Subject: [PATCH 1/3] Add plot demo using plotutils

---
 demos/plot.sh | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100755 demos/plot.sh

diff --git a/demos/plot.sh b/demos/plot.sh
new file mode 100755
index 0000000..e33679b
--- /dev/null
+++ b/demos/plot.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+# erentar2002 2024
+
+# This script plots certain properties of elements on the periodic table
+
+# Dependency: gnu plotutils https://pkgs.org/search/?q=plotutils
+
+# To display the plot, use ./tek4010 demos/plot.sh
+
+# From top to bottom:
+#    - curl: download the periodic table data
+#            source: https://gist.github.com/GoodmanSciences/c2dd862cd38f21b0ad36b8f96b4bf1ee
+#
+#    - awk: split file by seperator ","
+#           then filter missing values in column 20 (density)
+#           then filter up to element 105
+#           then print atomic mass and density
+#
+#    - sed: remove the top row which includes names
+#
+#    - graph: -X x axis title;
+#             -Y y axis title;
+#             -F font;
+#             -m line type;
+#             -S symbol type and size;
+#             -w width;
+#             -r move horizontally
+#
+#    - plot: -T use tek device
+curl 'https://gist.githubusercontent.com/GoodmanSciences/c2dd862cd38f21b0ad36b8f96b4bf1ee/raw/1d92663004489a5b6926e944c1b3d9ec5c40900e/Periodic%2520Table%2520of%2520Elements.csv' \
+| awk '{split($0,a,","); if(length(a[20])!=0&&a[4]<105){print a[4],a[20]}}' | \
+sed 1d \
+| graph -X "atomic mass" -Y "density" -F "HersheySans" -m 1 -S 2 0.03 -w 1 -r 0 \
+| plot -T tek
+
+# On the line containing `awk`, columns are selected at the print statement.
+# This script selects the 4th and 20th columns, which are atomic mass and density respectively.
+
+# Full documentation for the `graph` utility is available at https://www.gnu.org/software/plotutils/manual/en/plotutils.pdf

From dfdc384bd56d5645fc242d35b7d2b4cba39c5313 Mon Sep 17 00:00:00 2001
From: erentar <erentar2002@gmail.com>
Date: Fri, 21 Jun 2024 12:42:45 +0200
Subject: [PATCH 2/3] Changes to accommodate repo owner requests

---
 demos/{ => plotutils}/plot.sh | 3 ++-
 demos/plotutils/readme        | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)
 rename demos/{ => plotutils}/plot.sh (90%)
 create mode 100644 demos/plotutils/readme

diff --git a/demos/plot.sh b/demos/plotutils/plot.sh
similarity index 90%
rename from demos/plot.sh
rename to demos/plotutils/plot.sh
index e33679b..740ab59 100755
--- a/demos/plot.sh
+++ b/demos/plotutils/plot.sh
@@ -4,8 +4,9 @@
 # This script plots certain properties of elements on the periodic table
 
 # Dependency: gnu plotutils https://pkgs.org/search/?q=plotutils
+# This package can be installed by running `apt install plotutils` on debian and its derivatives
 
-# To display the plot, use ./tek4010 demos/plot.sh
+# To display the plot, use ./tek4010 demos/plotuils/plot.sh
 
 # From top to bottom:
 #    - curl: download the periodic table data
diff --git a/demos/plotutils/readme b/demos/plotutils/readme
new file mode 100644
index 0000000..f0718fe
--- /dev/null
+++ b/demos/plotutils/readme
@@ -0,0 +1,4 @@
+This directory contains a plot demo using GNU plotutils.
+
+GNU plotutils is available on most linux distributions as `plotutils`.  
+On Raspberry Pi OS and other Debian derivatives, this package can be installed by `apt install plotutils`.

From 80863fec0ba8bc66b1441e71e0b4bdcf8afed040 Mon Sep 17 00:00:00 2001
From: erentar <erentar2002@gmail.com>
Date: Fri, 21 Jun 2024 17:21:17 +0200
Subject: [PATCH 3/3] improvement to the plot and to the script

---
 demos/plotutils/plot.sh | 30 ++++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)

diff --git a/demos/plotutils/plot.sh b/demos/plotutils/plot.sh
index 740ab59..87cc8ef 100755
--- a/demos/plotutils/plot.sh
+++ b/demos/plotutils/plot.sh
@@ -13,13 +13,13 @@
 #            source: https://gist.github.com/GoodmanSciences/c2dd862cd38f21b0ad36b8f96b4bf1ee
 #
 #    - awk: split file by seperator ","
-#           then filter missing values in column 20 (density)
-#           then filter up to element 105
-#           then print atomic mass and density
+#           then filter missing values 
+#           then print atomic mass, then density multiplied by atomic radius
 #
 #    - sed: remove the top row which includes names
 #
-#    - graph: -X x axis title;
+#    - graph: -L plot title
+#             -X x axis title;
 #             -Y y axis title;
 #             -F font;
 #             -m line type;
@@ -28,10 +28,24 @@
 #             -r move horizontally
 #
 #    - plot: -T use tek device
-curl 'https://gist.githubusercontent.com/GoodmanSciences/c2dd862cd38f21b0ad36b8f96b4bf1ee/raw/1d92663004489a5b6926e944c1b3d9ec5c40900e/Periodic%2520Table%2520of%2520Elements.csv' \
-| awk '{split($0,a,","); if(length(a[20])!=0&&a[4]<105){print a[4],a[20]}}' | \
-sed 1d \
-| graph -X "atomic mass" -Y "density" -F "HersheySans" -m 1 -S 2 0.03 -w 1 -r 0 \
+curl -s 'https://gist.githubusercontent.com/GoodmanSciences/c2dd862cd38f21b0ad36b8f96b4bf1ee/raw/1d92663004489a5b6926e944c1b3d9ec5c40900e/Periodic%2520Table%2520of%2520Elements.csv' \
+| awk \
+    '{
+        split($0,a,",");
+        if(a[4]*a[20]*a[17]){       # discard rows with missing columns
+            print a[1],a[20]*a[17]
+        }
+    }' \
+| sed 1d \
+| graph \
+    -L "Density of elements" \
+    -X "atomic number" \
+    -Y "density(g/cm^3) * atomic radius(rcovH)" \
+    -F "HersheySans" \
+    -m 2 \
+    -S 3 0.03 \
+    -w 1 \
+    -r 0 \
 | plot -T tek
 
 # On the line containing `awk`, columns are selected at the print statement.