diff -uNr sc-im-0.7.0/src/plot.c sc-im-0.7.0.mod/src/plot.c
--- sc-im-0.7.0/src/plot.c	2017-12-13 19:48:59.000000000 +0200
+++ sc-im-0.7.0.mod/src/plot.c	2019-12-23 14:13:03.731217357 +0200
@@ -111,7 +111,7 @@
 int plot(char * s, int r, int c, int rf, int cf) {
 #ifdef GNUPLOT
     // create tmp file
-    char datafile[] = "/tmp/sc-im-plotdataXXXXXX";
+    char datafile[] = "@TERMUX_PREFIX@/tmp/sc-im-plotdataXXXXXX";
     int fd = mkstemp(datafile);
     if (fd == -1) {
         sc_error("Error while creating temp file for plot");