From 02ead89d62b8c84d2908f0865ede07a8e2f6bc1b Mon Sep 17 00:00:00 2001
From: Brendan Klare <brendan.klare@noblis.org>
Date: Sat, 10 Aug 2013 10:27:56 -0400
Subject: [PATCH] Handle non-thresholdable output for detection plotting

---
 openbr/core/eval.cpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/openbr/core/eval.cpp b/openbr/core/eval.cpp
index 05ce85d..74d79ca 100644
--- a/openbr/core/eval.cpp
+++ b/openbr/core/eval.cpp
@@ -383,13 +383,19 @@ static QStringList computeDetectionResults(const QList<ResolvedDetection> &detec
     }
 
     const int keep = qMin(points.size(), Max_Points);
-    if (keep < 2) qFatal("Insufficient points.");
+    if (keep < 1) qFatal("Insufficient points.");
 
     QStringList lines; lines.reserve(keep);
-    for (int i=0; i<keep; i++) {
-        const DetectionOperatingPoint &point = points[double(i) / double(keep-1) * double(points.size()-1)];
+    if (keep == 1) {
+        const DetectionOperatingPoint &point = points[0];
         lines.append(QString("%1ROC, %2, %3").arg(discrete ? "Discrete" : "Continuous", QString::number(point.FalsePositives), QString::number(point.Recall)));
         lines.append(QString("%1PR, %2, %3").arg(discrete ? "Discrete" : "Continuous", QString::number(point.Recall), QString::number(point.Precision)));
+    } else {
+        for (int i=0; i<keep; i++) {
+            const DetectionOperatingPoint &point = points[double(i) / double(keep-1) * double(points.size()-1)];
+            lines.append(QString("%1ROC, %2, %3").arg(discrete ? "Discrete" : "Continuous", QString::number(point.FalsePositives), QString::number(point.Recall)));
+            lines.append(QString("%1PR, %2, %3").arg(discrete ? "Discrete" : "Continuous", QString::number(point.Recall), QString::number(point.Precision)));
+        }
     }
     return lines;
 }
--
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