From 221afe9b889bcb184d6f02c22eb8132249217c10 Mon Sep 17 00:00:00 2001
From: Martin Roa Villescas <m.roa.villescas@tue.nl>
Date: Thu, 25 Jul 2019 14:14:14 +0200
Subject: [PATCH] Upgrade spectrum.jl example to Julia 1.*

---
 examples/spectrum.jl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/spectrum.jl b/examples/spectrum.jl
index 18fbc5d..29fb90f 100644
--- a/examples/spectrum.jl
+++ b/examples/spectrum.jl
@@ -3,7 +3,7 @@
 
 module SpectrumExample
 
-using GR, PortAudio, SampledSignals
+using GR, PortAudio, SampledSignals, FFTW
 
 const N = 1024
 const stream = PortAudioStream(1, 0, blocksize=N)
@@ -14,7 +14,7 @@ const fs = Float32[float(f) for f in domain(fft(buf)[fmin..fmax])]
 
 while true
     read!(stream, buf)
-    plot(fs, abs(fft(buf)[fmin..fmax]), xlim=(fs[1],fs[end]), ylim=(0,100))
+    plot(fs, abs.(fft(buf)[fmin..fmax]), xlim=(fs[1],fs[end]), ylim=(0,100))
 end
 
 end