Prefigure graph

requirements.txt

@@ -1,5 +1,5 @@
 pretext[prefigure] == 2.36.0
-prefig >= 0.5.7
+prefig >= 0.5.15
 CodeChat-Server == 0.2.25
 pelican == 4.11.0
 markdown == 3.7.0

source/linear-algebra/source/04-MX/01.ptx

@@ -367,30 +367,25 @@ in terms of matrix multiplication.</p>
 </ul>
                 </statement>
      </exploration>
-<exploration>
-                <statement>
-<p>Use the included map in this problem.</p>
-                    <figure xml:id="MX1-adjacency">
-            <caption>Adjacency map, showing roads between 5 cities</caption>
-            <image xml:id="MX1-image-adjacency" width="50%">
-                <description>A map with 5 dots. A is connected to B, B is connected to C, C is connected to D and E, and D and E are connected to each other</description>
-                <latex-image>
-\tikz{\node[shape=circle,draw=black] (A) at (0,0) {A};
-    \node[shape=circle,draw=black] (B) at (0,2) {B};
-    \node[shape=circle,draw=black] (C) at (0,4) {C};
-    \node[shape=circle,draw=black] (D) at (-2,6) {D};
-    \node[shape=circle,draw=black] (E) at (2,6) {E};
-    \draw (A)--(B)--(C)--(D)--(E)--(C)}
-                </latex-image>
-            </image>
-        </figure>
+    <exploration>
+        <statement>
+            <p>Use the included map in this problem.</p>
+            <figure xml:id="MX1-adjacency">
+                <caption>Adjacency map, showing roads between 5 cities</caption>
+                <image>
+                    <description>A map with 5 dots. A is connected to B, B is connected to C, C is connected to D and E, and D and E are connected to each other</description>
+                    <prefigure xmlns="https://prefigure.org" label="prefigure-MX1-graph">
+                        <xi:include href="prefigure/MX1-adjacency-graph.xml"/>
+                    </prefigure>
+                </image>
+            </figure>
 
 <ul>
 <li>An <em>adjacency matrix</em> for this map is a matrix that has the number of roads from city <m>i</m> to city <m>j</m> in the <m>(i,j)</m> entry of the matrix. A road is a path of length exactly 1. All <m>(i,i)</m>entries are 0. Write the adjacency matrix for this map, with the cities in alphabetical order.</li>
 
-    <li>What does the square of this matrix tell you about the map? The cube? The <m>n</m>-th power?</li>
-    </ul>
-                </statement>
+<li>What does the square of this matrix tell you about the map? The cube? The <m>n</m>-th power?</li>
+</ul>
+        </statement>
      </exploration>
     </subsection>
     <subsection component="html">

source/linear-algebra/source/04-MX/prefigure/MX1-adjacency-graph.xml

@@ -0,0 +1,37 @@
+<diagram dimensions="(600,300)" margins="5" xmlns="https://prefigure.org">
+  <coordinates bbox="(-1,-0.5,1,0.5)">
+    <network scale="0.8" node-fill="#ccf" node-stroke="black"
+             seed="1" labels="yes" layout="bfs" start="0"
+             tactile-node-size="40">
+      <node at="0">A</node>
+      <node at="1">B</node>
+      <node at="2">C</node>
+      <node at="3">D</node>
+      <node at="4">E</node>
+      <edge vertices="[0,1]"/>
+      <edge vertices="[1,2]"/>
+      <edge vertices="[2,3]"/>
+      <edge vertices="[2,4]"/>
+      <edge vertices="[3,4]"/>
+    </network>
+  </coordinates>
+
+ <annotations>
+    <annotation ref="figure" text="A network with five vertices">
+      <annotation ref="node-0" text="The node labeled A">
+        <annotation ref="edge-0-1" text="An edge connecting A and B"/>
+      </annotation>
+      <annotation ref="node-1" text="The node labeled B">
+        <annotation ref="edge-1-2" text="An edge connecting B and C"/>
+      </annotation>
+      <annotation ref="node-2" text="The node labeled C">
+        <annotation ref="edge-2-3" text="An edge connecting C and D"/>
+        <annotation ref="edge-2-4" text="An edge connecting C and E"/>
+      </annotation>
+      <annotation ref="node-3" text="The node labeled D">
+        <annotation ref="edge-3-4" text="An edge connecting D and E"/>
+      </annotation>
+      <annotation ref="node-4" text="The node labeled E"/>
+    </annotation>
+  </annotations>
+</diagram>