From e3ddde01b4337675de13c74e3fea208916208034 Mon Sep 17 00:00:00 2001
From: Cees Bassa <cbassa@gmail.com>
Date: Sun, 8 Jan 2023 12:08:33 +0100
Subject: [PATCH] Update autoscaling

---
 rfio.c   | 2 +-
 rfplot.c | 7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/rfio.c b/rfio.c
index c93fbf3..2fc4f5d 100644
--- a/rfio.c
+++ b/rfio.c
@@ -195,7 +195,7 @@ struct spectrogram read_spectrogram(char *prefix,int isub,int nsub,double f0,dou
   free(z);
   free(cz);
 
-  return s;
+ return s;
 }
 
 void write_spectrogram(struct spectrogram s,char *prefix)
diff --git a/rfplot.c b/rfplot.c
index 6a16b60..b15e2a9 100644
--- a/rfplot.c
+++ b/rfplot.c
@@ -55,7 +55,7 @@ int main(int argc,char *argv[])
   float heat_g[] = {0.0, 0.0, 0.5, 1.0, 1.0};
   float heat_b[] = {0.0, 0.0, 0.0, 0.3, 1.0};
   float xmin,xmax,ymin,ymax,zmin,zmax=1.0;
-  int i,j,k,flag=0,sn;
+  int i,j,k,flag=0,sn,maxflag=0;
   int redraw=1,mode=0,posn=0,click=0,graves=0,grid=0;
   float dt,zzmax,s1,s2,z,za,sigma,zs,zm;
   int ix=0,iy=0,isub=0;
@@ -144,6 +144,7 @@ int main(int argc,char *argv[])
 	
       case 'z':
 	zmax=atof(optarg);
+	maxflag=1;
 	break;
 
       case 'g':
@@ -206,7 +207,9 @@ int main(int argc,char *argv[])
   ymin=0.0;
   ymax=(float) s.nchan;
   zmin=0.0;
-
+  if (maxflag==0)
+    zmax=s.zmax;
+  
   // Set trace
   tf.n=0;