Double in Scientific Notation after Marshal

Hi,
I have an element defined as an xsd:double. If I try and place a value say 100 into the element and then I marshal it I get an output of <Quantity>100.0</Quantity>... That is fine....
However, if I put a value in of say 1000000000, I get an output of <Quantity>1.0E9</Quantity> when I marshal.
Can I turn a setting on (or off) so the output does not get converted into scientific notation?
-j

I also verified the XML standard and you are right that the values are legal xsd:double values. What made this a problem for me is that the XSLT functions that use XPATH number() to process these values failed because XPATH specifies that a number is:
Number ::= Digits ( '.' Digits?)? | '.' Digits
which does not handle the exponents at all. So the XML documents produced could not be handled by XSLT processors.
For fun, I redefined my schema definition to replace xsd:double with:
<xs:simpleType name="simpleDouble">
     <xs:restriction base="xs:double">
          <xs:pattern value="(-)?[0-9]*(.[0-9]+)?" />
     </xs:restriction>
</xs:simpleType>
which is essentially a non-exponent based double. JAXB rendered the document, but then the validator complained that the output did not match the pattern. So JAXB does not use this pattern as a method of determining output, only as a method of validation.
This is why I replaced the DoubleType class for my solution. The alternative of using the jaxb:globalBindings is probably a cleaner approach. I think I'll switch my implementation. Thanks for the pointer!
-Allan

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Double and scientific notation

Hi,
I am using a Double to store data but when i output it the value
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Many Thanks

You can have a look at NumberFormat and also search this forum because it's a frequently asked question.

Converting from a double to scientific notation

does anyone know how I can convert a double value to scientific notation?

java.text.DecimalFormat can do that.

Formatting Doubles with Scientific Notation Depending on Exponent Size

Hi there. I was just wondering if there was a better way to do the following:
DecimalFormat fmt;
if (v>=1.0E9 || v<=-1.0E9 || (v>-1.0E-8 && v<1.0E-8 && v!=0.0 && v!=-0.0))
fmt = new DecimalFormat("0.########E0");
else fmt = new DecimalFormat("0.########");
return fmt.format(v);

I'm not an expert on DecimalFormat, so I may have missed something, but the only improvement I can see is to remove the v!=-0.0 check. 0.0==-0.0, so it's unnecessary.

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Hello guys,
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i'm not quite sure whether double odoes not allow it.
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       "((" +
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Create an NSString for number in scientific notation from double?

Hi
Given a double, I want to create a string in scientific notation.
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Here, you should find what you are looking for:
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/Strings/Ar ticles/FormatStrings.html#//apple_ref/doc/uid/20000943
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/Strings/Ar ticles/FormatStrings.html#//apple_ref/doc/uid/20000943
http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/ Classes/NSStringClass/Reference/NSString.html#//appleref/occ/clm/NSString/stringWithFormat:

How can I get Numbers 3.2 to recognise 1e-5 as scientific notation?

I just changed from Numbers '09 (2.3) to Number 3.2 on Mavericks (OS X 10.9.3) and the new version doesn't seem to recognise "e" or "E" as scientific notation. When I set the cell format to scientific and type "0.0015", Numbers returns "1.5×10^-03". I would however prefer to obtain "1.5e-3". And vice versa: if, after setting the cell format to scientific, I type "1.5e-3", it automatically formats the cell as text and I can't get it to recognise it as scientific notation. With "E" instead of "e", the problem is exactly the same. Does anyone know how I can change this setting? I already tried to search for an answer to my question, but couldn't find anything...

if, after setting the cell format to scientific, I type "1.5e-3", it automatically formats the cell as text and I can't get it to recognise it as scientific notation.
I can't duplicate the problem here, either when the cells are formatted as Automatic or as Scientific:
When you type 1.5e-3 are you making sure not to enter a space after the e? (When I type a space the cell automatically formats as Text.)
SG

Importing data in scientific notation format

Hi,
I've got some data files produced by some ancient laboratory software. In the files, numbers are formatted like this:
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+8.18901E-03
etc.
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Thanks

If the file is a comma separated values file, you have two choices:
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Scientific Notation to Integer?

I have a string like 1.780657E7 that I need to convert to an integer. I think that might be too big for Integer, so maybe BigInt would be better.
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Thanks a lot,
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A small exegesis of prometheuzz's perfectly accurate, if slightly terse solution.
Scientific notation is assumed to be floating-point. You must therefore parse a scientific-notation string using Float.parseFloat() or Double.parseDouble() and "integerise" the result if an integer is what you want.
The last line is to show that your sample number is easy to fit in an int variable.

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I need to be able to input scientific notation in numeric fields for my adobe forms. I can put the pattern to num{9.99E} and it will allow me to put positive exponents and negative exponents to -3. However, I need to input the number 4.76E-19 and it always changes it to 0.00E0. What kind I do to keep this small of a number as 4.76E-19?

Hi,
Unfortunatly in approach with text field numbers will not be formatted in scientific notation, users will have to type numbers in correct format.
In approach with NumericField and patter {9.99E} i think there is some bug.
I can type this number:
After i lost focus from this field it will be formatted in tis style:
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Is this bug!?
BR

Scientific Notation in Java

Hi,
In the hopes of enforcing a precision of 1.0e-16 for all the doubles in my Java application, I am trying
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decf.applyPattern("0.################E0");
as the first step in the execution process but this is not working. Am I missing something?
Thanks,
Corrine

It might help if you explained what "not working" means in this case. You can only use formatting to control how the numbers appear to you, not how they are represented internally for calculation, if that's part of your question.

How to prevent display in scientific notation

I want to convert a large double value to a string,
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Thanks in advanced

Start here: http://java.sun.com/j2se/1.4/docs/api/java/text/NumberFormat.html

Problem: program outputs numbers in scientific notation

my problem is that my program outputs the population in scientific notation instead of round the number to the nearest one. ex: it should say 30787949.57 instead of 3.078794957 E7
// Calculates the poulation of Mexico City from 1995 to 2018.
// displays the year and population
class PopulationCalculator {
static double r2(double x) {
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double z=((double)(Math.round(x*100)))/100;
return z;
} //end method r2
public static void main(String args[]) {
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{code/]

A: problem: program outputs numbers in scientific notation

Or upgrade to JDK 5.0 and user the new java.util.Formatter capability.
You control the rounding and get localization of the fomatted string at
no extra charge. A quick example:
class A {
    public static void main(String[] args) {
        double d = 30787949.57d;
        System.out.println(java.lang.String.format("%,17.2f", d));
}Example output for three different locales:
$ javac -g A.java
$ LC_ALL=fr_FR   java A
    30 787 949,57
$ LC_ALL=en_NZ   java A
    30,787,949.57
$ LC_ALL=it_IT     java A
    30.787.949,57For more information, refer to:
http://java.sun.com/j2se/1.5.0/docs/relnotes/features.html#formatter

DecimalFormat scientific notation if necessary

I would like to find a way to output a double value in a way that uses scientific notation only if the number of digits output would be at least 15. For instance, the value 12345000000000000 should be output as 1.2345E16, but 12345000 would not be output in scientific notation (and the same logic if the value is < 0). Is this possible with the DecimalFormat class?
I tried using String.format("%.15g", value), but that always displays trailing 0s to fill the significant digits (e.g. 12.345 outputs "12.3450000000000"). I don't want it to output the trailing 0s.

I would like to find a way to output a double value
in a way that uses scientific notation only if the
number of digits output would be at least 15. For
instance, the value 12345000000000000 should be
output as 1.2345E16, but 12345000 would not be output
in scientific notation (and the same logic if the
value is < 0). Is this possible with the
DecimalFormat class?
I tried using String.format("%.15g", value), but that
always displays trailing 0s to fill the significant
digits (e.g. 12.345 outputs "12.3450000000000"). I
don't want it to output the trailing 0s.With DecimalFormat ( http://java.sun.com/j2se/1.5.0/docs/api/java/text/DecimalFormat.html )
you can format the number in scientific notation but to control which numbers are formatted I think you must write some sort of if else

Displaying Scientific Notation

I see a lot of people asking questions about how to prevent showing Scientific Notation. I have the opposite problem, I can't seem to show scientific notation.
In the field I'll Enter: 2.5E-5
After commit, the value show: 0
If I look in the database, it shows: 0.000027
How can I get the form to show 2.5E-5?
My Entity Attribute:
<Attribute
    Name="Stock"
    ColumnName="STOCK"
    SQLType="NUMERIC"
    Type="oracle.jbo.domain.Number"
    ColumnType="NUMBER"
    TableName="WASTE_STREAM_NUCLIDE">
    <Properties>
      <SchemaBasedProperties>
        <DISPLAYWIDTH Value="8"/>
      </SchemaBasedProperties>
    </Properties>
</Attribute>
My Field on the Page:
                <af:inputText value="#{bindings.Stock.inputValue}" label="#{bindings.Stock.hints.label}"
                              required="#{bindings.Stock.hints.mandatory}"
                              columns="#{bindings.Stock.hints.displayWidth}"
                              maximumLength="#{bindings.Stock.hints.precision}"
                              shortDesc="#{bindings.Stock.hints.tooltip}" id="it2">
                    <af:convertNumber groupingUsed="false" pattern="0.######E0"/>
                </af:inputText>

Good point. If everyone having problems with SQL*Plus number formatting went to the free online HTML manual, looked for "NUMBER" in the index and found
    NUMBER
        column definition from DESCRIBE, 12
    NUMBER clause, 5.12.2
        VARIABLE command, 12
    NUMBER columns
        changing format, 6.1.2.1, 12
        default format, 6.1.2.1, 12
    number formats
        $, 6.1.2.2
        0, 6.1.2.2
        9, 6.1.2.2
        comma, 6.1.2.2
        setting default, 5.9.4, 5.9.4, 12, 12
    NUMFORMAT clause
        in LOGIN.SQL, 2.2.2.1
    NUMFORMAT variable, 12, 12
    NUMWIDTH variable, 12, 12
        effect on NUMBER column format, 6.1.2.1, 12then we'd have nothing to do.

Double in Scientific Notation after Marshal

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