--- ray/doc/man/man1/rtpict.1	2023/12/12 16:31:45	1.14
+++ ray/doc/man/man1/rtpict.1	2025/06/04 20:32:24	1.16
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rtpict.1,v 1.14 2023/12/12 16:31:45 greg Exp $"
+.\" RCSid "$Id: rtpict.1,v 1.16 2025/06/04 20:32:24 greg Exp $"
 .TH RTPICT 1 3/19/2018 RADIANCE
 .SH NAME
 rtpict - generate a RADIANCE picture, hyperspectral image, or layers using rtrace
@@ -130,11 +130,11 @@ rtpict -n 8 -vf fish.vf @render.opt -ovLn fisholay sce
 .PP
 To render a hyperspectral irradiance image with 18 spectral samples:
 .IP "" .2i
-rtpict -vf inside.vf -cs 18 -co+ scene.oct > scene_inside.hsr
+rtpict -vf inside.vf -i+ -cs 18 -co+ scene.oct > scene_inside.hsr
 .SH AUTHOR
 Greg Ward
 .SH "SEE ALSO"
 getinfo(1), mkpmap(1), oconv(1), pfilt(1), 
 pvalue(1), rad(1), rcode_depth(1), rcode_norm(1), rcode_ident(1),
 rcomb(1), rcrop(1), rmtxop(1),
-rpiece(1), rpict(1), rsplit(1), rtrace(1), rvu(1), vwrays(1)
+rpiece(1), rpict(1), rsplit(1), rtrace(1), rvu(1), rxpiece(1), vwrays(1)