Overlap Detection

Overlap detection is feature in Survey Solutions’ geography question. It is applicable only to the geography questions placed in a roster. When activated by the questionnaire designer, it will assist the interviewers in marking the areas in such a way that there is no overlap between multiple marked plots/parcels. This is important to avoid double-counting of any area in calculation of the total area.

If an overlap is detected, the program signals about it at the bottom of the map, mentioning the other roster items with which an overlap was detected. Overlap detection works instantaneously, even if the answer to the question has not been saved yet.

CATI Interviewer Retraining Instructions

Collecting data with Survey Solutions over the phone

Offline approach utilizing tablets

This approach is most suitable for the interviewers working at a location with poor/slow/not-reliable internet connectivity. It is recommended that these generic instructions are reviewed and customized by survey administrators for each particular survey. The article is oriented on the agencies already having experience in using Survey Solutions for face-to-face (CAPI) surveys and in need to re-orient their operations for the telephone surveys.

Setting photo size and quality

Survey Solutions v5.22 automatically restricts the size of the images captured by the Interviewer App (see limits).
The information below is applicable only if you wish to produce files even smaller than those automatically produced.

Survey Solutions image (picture) question does not specify any particular size or quality of the photo to be captured with the tablet’s camera. Instead Survey Solutions captures the image supplied by a standard picture provider (typically the Camera application) installed in the OS Android. This allows Survey Solutions to benefit from controls and effects present in such a provider.