Analyze Particles Accuracy

[John Winne]

I have been using ImageJ to calculate the area percentage of porosity
in a thermal spray coating with a great deal of success. What I would
like to do is extend the decimal point to 2 places to the right;
thereby allowing an evaluation to 1/100 of a percent porosity. However,
I have not been able to locate the code to do so. Where does it reside?

John

[Wayne Rasband]

On Jan 26, 2006, at 9:40 AM, John Winne wrote:

> I have been using ImageJ to calculate the area percentage of porosity
> in a thermal spray coating with a great deal of success. What I would
> like to do is extend the decimal point to 2 places to the right;
> thereby allowing an evaluation to 1/100 of a percent porosity.
> However, I have not been able to locate the code to do so. Where does
> it reside?

In the Analyze>Set Measurements dialog.

-wayne

[John Winne]

Thanks, Wayne. But the Area Fraction still remains at x.x%. I'm looking
for x.xx%

John
On Jan 26, 2006, at 9:36 AM, Wayne Rasband wrote:

> On Jan 26, 2006, at 9:40 AM, John Winne wrote:
>
>> I have been using ImageJ to calculate the area percentage of porosity
>> in a thermal spray coating with a great deal of success. What I would
>> like to do is extend the decimal point to 2 places to the right;
>> thereby allowing an evaluation to 1/100 of a percent porosity.
>> However, I have not been able to locate the code to do so. Where does
>> it reside?
>
> In the Analyze>Set Measurements dialog.
>
> -wayne
>

[Wayne Rasband]

> Thanks, Wayne. But the Area Fraction still remains at x.x%. I'm
> looking for x.xx%

This is fixed in ImageJ 1.35o, which will be available next week.

-wayne

> On Jan 26, 2006, at 9:36 AM, Wayne Rasband wrote:
>
>> On Jan 26, 2006, at 9:40 AM, John Winne wrote:
>>
>>> I have been using ImageJ to calculate the area percentage of
>>> porosity in a thermal spray coating with a great deal of success.
>>> What I would like to do is extend the decimal point to 2 places to
>>> the right; thereby allowing an evaluation to 1/100 of a percent
>>> porosity. However, I have not been able to locate the code to do so.
>>> Where does it reside?
>>
>> In the Analyze>Set Measurements dialog.
>>
>> -wayne
>>
>