added floor for steps and import some math stuff"

__init__.py

@@ -5,7 +5,9 @@ from astropy import units as u
 from astropy.coordinates import SkyCoord
 import sys
 import logging
-import math
+from math import floor
+from math import cos
+from math import radians
 
 '''
 Setup logging
@@ -59,15 +61,15 @@ class CreatePointings(Ui_FormCreatePoinings):
         pointings=0
         raSign=-1
         # m x n matrix of pointings with stepsSize steps
-        for decStep in range (-m,m): 
+        for decStep in range (floor(-m/2),floor(m/2)): 
             decOffset=decCentrePoint+decStep*stepSize
             raSign=-raSign
-            for raStep in range(-n,n):
+            for raStep in range(floor(-n/2),floor(n/2)):
                 if raSign==1:
-                    raOffset=raCentrePoint+((stepSize*raStep*raSign)/math.cos(math.radians(decOffset)))
+                    raOffset=raCentrePoint+((stepSize*raStep*raSign)/cos(radians(decOffset)))
                 else:
                     #raOffset=raCentrePoint+((stepSize*raStep+stepSize/2)*raSign)/math.cos(math.radians(decOffset))
-                    raOffset=raCentrePoint+((stepSize*(raStep+1))*raSign)/math.cos(math.radians(decOffset))
+                    raOffset=raCentrePoint+((stepSize*(raStep+1))*raSign)/cos(radians(decOffset))
                 logger.debug('raOffset: {0} raSign {1}'.format(raOffset,raSign))
                 self.measList.append(SkyCoord(ra=raOffset*u.degree,dec=decOffset*u.degree,frame='icrs'))
                 pointings+=1

ui_createpointings.ui

@@ -202,8 +202,11 @@
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
+      <property name="minimum">
+       <number>1</number>
+      </property>
       <property name="maximum">
-       <number>30</number>
+       <number>20</number>
       </property>
       <property name="value">
        <number>1</number>
@@ -215,6 +218,9 @@
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
+      <property name="minimum">
+       <number>1</number>
+      </property>
       <property name="maximum">
        <number>30</number>
       </property>