[Qgis-user] Field Calculator Get lon values of points

[Alex Mandel]

Close, I believe width is total number of characters. And yes precision
is just the number of characters to the right of the decimal.
so 12 w 5 p means 7char.5char
Which is why I suggested 12 w 8 p
-120.12345678
38.12345678

I don't recall if a negative counts as a char, I don't think it does on
a real. 8 after the decimal is a common amount of precision, the last
couple of digits take you down to meter/submeter. I'd have to look up
exactly where it gets you I don't recall right now.

Thanks,
Alex

On 04/28/2014 10:23 PM, Leo Kris Palao wrote:
> Hi Alex,
> 
> Thanks for you comment. I have already solved the issue. When I first
> created the field I set the width to 3 and precision to 5 - this is where
> my values were rounded to whole number. But when I tried it the second
> time, I leave the width to its default value of 12 and adjusted the
> precision to 5 my value were not rounded (i got the correct values). The
> width supposed to be the number of characters for the integer and precision
> is the decimal places.
> 
> Thanks,
> -Leo
> 
> 
> On Tue, Apr 29, 2014 at 11:29 AM, Alex Mandel <tech_dev at wildintellect.com>wrote:
> 
>> On 04/28/2014 06:54 PM, Leo Kris Palao wrote:
>>> Dear QGIS users,
>>>
>>> Good day!
>>>
>>> I want to get the longitude and latitude coordinate values of my points.
>> I
>>> used Geometry > $x and Geometry > $y to derive longitude and latitude of
>> my
>>> points. It give me correct values but when I exit editing mode the values
>>> were rounded to whole number. For instance:
>>>
>>> my Lon values is 95.94592 but when I exit editing mode this value is
>>> converted to 95.00000
>>>
>>> Thanks in advance for any help.
>>>
>>> -Leo
>>
>> New field or existing field?
>> Hopefully with a new field you picked Text, and changed the maximum
>> width. That is assuming you wanted to get 38.345 95.945 etc
>> If you wanted to fields, then use Decimal Number(real), and do each one
>> at a time. Now when you pick real, you have set the Precision. Precision
>> is the number of values after the decimal (to the right). Typical GIS is 8.
>>
>> So to store 1 coordinate:
>> Decimal Field (real)
>> Width 12
>> Precision 8
>>
>> Now if it's an existing field, just make a new field because it sounds
>> like the old field isn't set right.
>>
>> If that doesn't help, can you tell use what version of QGIS and what
>> operating system(including version).
>>
>> Thanks,
>> Alex
>>
> 
> 
> 
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