diff --git a/sw/logalizer/plot3dparse.c b/sw/logalizer/plot3dparse.c
new file mode 100644
index 0000000000..82270439f4
--- /dev/null
+++ b/sw/logalizer/plot3dparse.c
@@ -0,0 +1,200 @@
+
+/*
+
+This is a quick hack - just to show how it might work. It gives a 3D view of
+the GPS positions with an additional value (here: attitude phi) as colour.
+
+Start this with your favorite .data telemetry file as argument and pipe it 
+to output.dat, then run gnuplot with:
+ 
+#set terminal png nocrop enhanced size 800,600
+#set output 'output.png'
+set view 64, 8, 1, 1
+set isosamples 50, 10
+set hidden3d offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
+set palette
+set xlabel "m"
+set ylabel "m"
+set zlabel "m"
+splot "output.dat" using 1:2:3:4 title "roll" with linespoints palette
+pause -1
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+#include <math.h>
+#include <sys/time.h>
+
+int main( int argc, char* argv[] )
+{
+/*
+   <message name="GPS" ID="8">
+     <field name="mode"   type="uint8" unit="byte_mask"></field>
+     <field name="utm_east"  type="int32" unit="cm"></field>
+     <field name="utm_north"  type="int32" unit="cm"></field>
+     <field name="course" type="int16" unit="decideg"></field>
+     <field name="alt"    type="int32" unit="cm"></field>
+     <field name="speed"  type="uint16" unit="cm/s"></field>
+     <field name="climb"  type="int16" unit="cm/s"></field>
+     <field name="itow"  type="uint32" unit="ms"></field>
+     <field name="utm_zone"  type="uint8"></field>
+     <field name="gps_nb_err" type="uint8"></field>
+   </message>
+
+7.73 11 GPS 0 55577549 665183336 0 -4310 0 0 345957748 31 0
+
+
+   <message name="ATTITUDE" ID="6">
+     <field name="phi" type="int16" unit="deg"></field>
+     <field name="psi" type="int16" unit="deg"></field>
+     <field name="theta" type="int16" unit="deg"></field>
+   </message>
+
+230.41 23 ATTITUDE -22 0 -4
+
+   <message name="NAVIGATION_REF" ID="0x09">
+     <field name="utm_east"  type="int32" unit="m"></field>
+     <field name="utm_north" type="int32" unit="m"></field>
+     <field name="utm_zone" type="uint8"></field>
+   </message>
+
+7.77 23 NAVIGATION_REF 567835 5790977 32
+
+*/
+
+	char line_in[256];
+
+	float rtime;
+	char id_name[255];
+	unsigned int ac_id;
+
+	unsigned int byte_mask;
+	int utm_east;
+	int utm_north;
+	int course;
+	int alt;
+	int speed;
+	int climb;
+	unsigned int itow;
+	unsigned int utm_zone;
+	unsigned int gps_nb_err;
+
+	unsigned int phi;
+	unsigned int psi;
+	unsigned int theta;
+
+	unsigned int nr_utm_east;
+	unsigned int nr_utm_north;
+	unsigned int nr_utm_zone;
+
+	unsigned int humid;
+	unsigned int temp;
+
+	char got_navref = 0;
+
+	FILE *fd;
+	
+	if (argc != 2)
+	{
+    	printf("plot3dparse 'flight_file.data' > output.dat\n");
+    	exit(0);
+   	}
+	
+	fd = fopen( argv[1], "r" );
+
+	if (!fd) exit(0);
+
+	while (!feof(fd))
+	{
+
+		fgets( line_in, 256, fd );
+
+		if (sscanf( line_in, "%e %i %s", &rtime, &ac_id, id_name ))
+		{
+			if (!strcmp( "NAVIGATION_REF", id_name))
+			{
+				sscanf( line_in,  "%e %i %s %i %i %i\n",
+					&rtime,
+					&ac_id,
+					id_name,
+					&nr_utm_east,
+					&nr_utm_north,
+					&nr_utm_zone );
+
+				got_navref = 1;
+			}
+
+#if 0
+			if (!strcmp( "DPICCO_STATUS", id_name))
+			{
+                #define DPICCO_HUMID_MAX 0x7FFF
+                #define DPICCO_HUMID_RANGE 100.0
+
+                #define DPICCO_TEMP_MAX 0x7FFF
+                #define DPICCO_TEMP_RANGE 165.0
+                #define DPICCO_TEMP_OFFS -40.0
+
+                float fhumid, ftemp;
+
+				sscanf( line_in,  "%e %i %s %i %i %e %e\n",
+					&rtime,
+					&ac_id,
+					id_name,
+					&humid,
+					&temp );
+					
+                fhumid = (dpicco_val[0] * DPICCO_HUMID_RANGE) / DPICCO_HUMID_MAX;
+                ftemp = ((dpicco_val[1] * DPICCO_TEMP_RANGE) / DPICCO_TEMP_MAX) + DPICCO_TEMP_OFFS;
+
+				if (temp != 0) printf("%f %f %f\n", rtime, fhumid, ftemp);
+			}
+#endif
+
+			if (!strcmp( "GPS", id_name))
+			{
+				sscanf( line_in,  "%e %i %s %i %i %i %i %i %i %i %i %i %i\n",
+					&rtime,
+					&ac_id,
+					id_name,
+					&byte_mask,
+					&utm_east,
+					&utm_north,
+					&course,
+					&alt,
+					&speed,
+					&climb,
+					&itow,
+					&utm_zone,
+					&gps_nb_err );
+
+			}
+
+			if (!strcmp( "ATTITUDE", id_name))
+			{
+				sscanf( line_in,  "%e %i %s %i %i %i\n",
+					&rtime,
+					&ac_id,
+					id_name,
+					&phi,
+					&psi,
+					&theta );
+
+				if (got_navref) printf("%i %i %i %i\n\n", 
+                                       utm_east/100  - nr_utm_east,
+                                       utm_north/100 - nr_utm_north,
+                                       alt / 100,
+                                       phi );
+			}
+
+		}
+	}
+
+	fclose( fd );
+
+	return(0);
+}