From 176cd6d53968cb00c2e9ae75745da53b5e731bcc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Tue, 3 Jan 2017 15:12:58 +0100
Subject: [PATCH] [apps/regression] Avoid displaying the regression graph in
 there is not enough data for a regression

Change-Id: If0f65e2a377fb3f91d008d21812e318e92583548
---
 apps/regression/graph_controller.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/apps/regression/graph_controller.cpp b/apps/regression/graph_controller.cpp
index 8242aa401..53c4b775f 100644
--- a/apps/regression/graph_controller.cpp
+++ b/apps/regression/graph_controller.cpp
@@ -16,14 +16,17 @@ ViewController * GraphController::initialisationParameterController() {
 }
 
 bool GraphController::isEmpty() {
-  if (m_data->numberOfPairs() == 0) {
+  if (m_data->numberOfPairs() < 2 || isinf(m_data->slope()) || isnan(m_data->slope())) {
     return true;
   }
   return false;
 }
 
 const char * GraphController::emptyMessage() {
-  return "Aucune donnee a tracer";
+  if (m_data->numberOfPairs() == 0) {
+    return "Aucune donnee a tracer";
+  }
+  return "Pas assez de donnees pour un regression";
 }
 
 bool GraphController::handleEnter() {