[Qgis-developer] distance measure feature isn't working correctly

[Maciej Sieczka]

Tim Sutton wrote:
> Em 25/07/2007, às 03:57, Byambaa Mendbayar escreveu:

>> I have feedback on distance measure tool in QGIS. It isn't working
>> correctly; I mean it wasn't correct distance value on map. I have
>> tested that issue on both on SVN Trunk (head) and Release-0_8_1
>> branch. By the way I have old version of QGIS compiled by myself I
>> didn't remember that version's revision. This old compiled version
>> is working well for distance measuring and area measuring.

I'm not sure if this is a bug or a new feature - in QGIS 0.8.1 and 0.9
one *has to* "Enable the fly projection" for measuring tools to return
expected values. Defining a projection for your project that suits the
projection of your dataset is not enough. Could a knowledgable QGIS
develepor explain?

Furthermore, I noticed a regression in 0.9 compared to 0.8.1 - you
can't set units to meters or feet when working in lat/lon projection
and to degrees for metric/feet system - through the interface that pops
up after clicking the camera icon in the bottom-right. QGIS will always
reset units to degrees for the former and to meters/feet in the latter
case. However, you can manage the units fine if you do the same
operation via Settings -> Project properies -> General. Strange.

Maciek