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authorAaron LI <aly@aaronly.me>2017-11-03 13:15:43 +0800
committerAaron LI <aly@aaronly.me>2017-11-03 13:15:43 +0800
commiteb2fdf35f276a88158ed2620c28cb3ae7cc4e272 (patch)
tree0784883d917b3f9fe5d5eee07536188e4ea02f9f /astro
parent075c628a8c3c429b246744996781e5e58218a76c (diff)
downloadatoolbox-eb2fdf35f276a88158ed2620c28cb3ae7cc4e272.tar.bz2
astro/calc_psd.py: Also plot the additional pixel-based frequency axis
Diffstat (limited to 'astro')
-rwxr-xr-xastro/calc_psd.py21
1 files changed, 20 insertions, 1 deletions
diff --git a/astro/calc_psd.py b/astro/calc_psd.py
index a18e755..50344aa 100755
--- a/astro/calc_psd.py
+++ b/astro/calc_psd.py
@@ -194,7 +194,26 @@ class PSD:
title="Radial (Azimuthally Averaged) Power Spectral Density",
xlabel=r"k [%s$^{-1}$]" % self.pixel[1],
ylabel="Power")
- return ax
+
+ if self.pixel[1] != "pixel":
+ # Add an additional X axis for pixel-based frequencies
+ ax2 = ax.twiny()
+ ax2.set_xscale(ax.get_xscale())
+ pix_ticks = np.logspace(-4, 0, num=5) # [pixel^-1]
+ ax2.set_xticks(pix_ticks)
+ ax2.set_xticklabels([r"10$^{%d}$" % ep
+ for ep in np.log10(pix_ticks)])
+ x1_min, x1_max = ax.get_xlim()
+ x2_min, x2_max = x1_min*self.pixel[0], x1_max*self.pixel[0]
+ ax2.set_xlim(x2_min, x2_max)
+ ax2.set_xlabel(r"k [pixel$^{-1}$] (1 pixel = %.2f %s)" %
+ self.pixel)
+ ax2.grid(False)
+ # Raise title position to avoid overlapping
+ ax.title.set_position([0.5, 1.1])
+ return (ax, ax2)
+ else:
+ return ax
def open_image(infile):