Fix time axis on missing data (fixes #38)

Signed-off-by: Cees Bassa <cbassa@gmail.com>
2023-01-20 14:00:06 +01:00 · 2023-01-20 14:00:06 +01:00 · 9f8f6b4ac6
parent 68ddde792e
commit 9f8f6b4ac6
1 changed files with 11 additions and 0 deletions
--- a/rfplot.c
+++ b/rfplot.c
@ -846,6 +846,17 @@ void time_axis(double *mjd,int n,float xmin,float xmax,float ymin,float ymax)
    imax=n-1;
  mjdmin=mjd[imin];
  mjdmax=mjd[imax];
+
+  // Do not plot axis if no data is available
+  if (mjdmin==0.0 && mjdmax==0.0)
+    return;
+
+  // Correct maximum
+  if (mjdmax==0.0) {
+    for (i=0;i<n;i++)
+      if (mjd[i]>mjdmax)
+	mjdmax=mjd[i];
+  }
  dt=(float) 86400*(mjdmax-mjdmin);

  // Choose tickmarks