LI-COR LI-6400, Manual

Page: 407 / 846

Defining User Variables
ComputeList File Format
Using the LI-6400 15-5
string. A format specifier consists of the letter F or G followed by a digit. The
F code specifies a fixed format, and the number indicates the number of plac-
es to show to the right of the decimal. The G code specifies significant digits,
as given by the number. The G format will use exponential notation if neces-
sary (Table 15-1).
If, for example, you wish to see conductance shown with 4 significant digits
instead of 3, you could do this by appending a G4 to the ID number, as shown
below:
The Label String
The first of the three quoted strings following the ID/Format sequence is the
label, which must be 8 characters or less. The variableÕs label is used to iden-
tify the variable in text, graphics, and file output.
Table 15-1.
p
, 1000
p
, and
p
/1000 expressed using the various format codes
Code
p
1000
p p
/1000 Code
p
1000
p p
/1000
F0
3. 3141. 0.
G1
3 3E3 3E-3
F1 3.1 3141.6 0.0 G2 3.1 3.1E3 3.1E-3
F2
3.14 3141.59 0.00
G3
a
3.14 3.14E3 3.14E-3
F3 3.141 3141.592 0.003 G4 3.141 3.141E3 3.141E-3
F4
3.1416 3141.5927 0.0031
G5
3.1416 3.1416E3 3.1416E-3
F5 3.14159 3141.59265 0.00314 G6 3.14159 3.14159E3 3.14159E-3
a.Default.
##10 "(U/S)" "flow:area ratio"
" flow_um / area_cm2 / 100.0"
##20 "Trans" "Transpiration (mol/m2/s)"
" #10 * (h2o_2_mm - h2o_1_mm) / (1000.0 - h2o_2_mm)"
##21 "Trmmol" "Transpiration (mmol/m2/s)" " #20 * 1E3"
##23G4 "Cond" "Stomatal cond. (mol/m2/s)"
" StdCond(#20, Tleaf_c, condBL_mol, press_kPa, h2o_2_mm)"
Figure 15-3. Conductance definition modified to display 4 significant digits instead of 3.