From 317f9581844ad8feb3f7625529753463cb9dfb19 Mon Sep 17 00:00:00 2001
From: Johannes Pfeifer <jpfeifer@gmx.de>
Date: Thu, 23 Jun 2016 20:48:01 +0200
Subject: [PATCH] Ramsey: Test whether number of instruments matches number of
missing equation Otherwise cryptic crashes can result
---
matlab/evaluate_steady_state.m | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/matlab/evaluate_steady_state.m b/matlab/evaluate_steady_state.m
index 35110d651a..883357b5e6 100644
--- a/matlab/evaluate_steady_state.m
+++ b/matlab/evaluate_steady_state.m
@@ -54,6 +54,17 @@ function [ys,params,info] = evaluate_steady_state(ys_init,M,options,oo,steadysta
end
if options.ramsey_policy
+ %test whether specification matches
+ inst_nbr = size(options.instruments,1);
+ if inst_nbr~=0
+ orig_endo_aux_nbr = M.orig_endo_nbr + min(find([M.aux_vars.type] == 6)) - 1;
+ implied_inst_nbr = orig_endo_aux_nbr - M.orig_eq_nbr;
+ if inst_nbr>implied_inst_nbr
+ error('You have specified more instruments than there are omitted equations')
+ elseif inst_nbr<implied_inst_nbr
+ error('You have specified fewer instruments than there are omitted equations')
+ end
+ end
if steadystate_flag
% explicit steady state file
[ys,params,info] = evaluate_steady_state_file(ys_init,exo_ss,M, ...
--
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