How to choose number of decimal places

Hi there i am recieving a udp packet as a string and im opening a port to read it, which i receive using the below code.

fopen(UDPComIn);
data=fscanf(UDPComIn, '%f');

Using this i receive a number of -35.3630 which is the number, but it's missing a couple of the decimal places. The actual number i am looking for is -35.3630445. Using the code below i can extract all the information as a string.

fopen(UDPComIn);
data=fscanf(UDPComIn, '%s');
latitude = str2double(data)

Data = '-35.3630445', however latitude = -35.3630.

How do i receive all the decimal numbers as they are important?

Answer 1

[Stephen23]

Don't worry, MATLAB has not eaten your digits! You should not confuse how data is displayed with how data is stored in memory, because these are two totally different things. In your case, all of those digits (and more!) are stored correctly in memory. You can change the format to change what digits are displayed in the command window:

>> lat = str2double('-35.3630445');
>> format shortg
>> lat
lat =    -35.363
>> format longg
>> lat
lat =          -35.3630445

You see: all of the digits are stored the whole time, even if you choose not to display them all.