ImageJ

Cycloid grids

_‹ Previous Topic Next Topic _›

Classic

List

Threaded

8 messages Options

Sinead Roberts

Cycloid grids

Dear all,

I am trying to use the cycloid arc plug-in and I was wondering; how do
you calculate the length of the individual cycloid arcs please? I know
you input the percent of the image width you wish the height of the
cycloid to be, but what is the 'image width' they are referring to? It
cannot be of the whole on screen image, but is it of the 'box' area
each cycloid is contained within?

I am very sorry if this is a silly question,
Thank you in advance for your help,

Sinead Roberts

Kischell, Eric R.

Re: Cycloid grids

Sinead,
>how do you calculate the length of the individual cycloid arcs?
The length of the cycloid per test point is displayed in the Results
Table (l/p).
Also,
Length of Cycloid per Point = 2.0 * cycloidHeight (in physical units)
for Sequence C
Length of Cycloid per Point = cycloidHeight (in physical units) for
Sequence A

>what is the 'image width' they are referring to?
We define the height of the cycloid as a fraction/ percentage of the
image width.
The image width is the width of the current image (ImagePlus).

keesh
Work Life Plan:
To improve the quality of life for all mankind through better pattern
recognition techniques.
Home Life Plan:
Married, but happy. Three bright beacons light my way.
"Life goes by so fast, that if you don't stop and look around, you might
miss it."-- Ferris Bueller
===

-----Original Message-----
From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of
sinead roberts
Sent: Monday, November 16, 2009 12:29 PM
To: [hidden email]
Subject: Cycloid grids

Dear all,

I am trying to use the cycloid arc plug-in and I was wondering; how do
you calculate the length of the individual cycloid arcs please? I know
you input the percent of the image width you wish the height of the
cycloid to be, but what is the 'image width' they are referring to? It
cannot be of the whole on screen image, but is it of the 'box' area
each cycloid is contained within?

I am very sorry if this is a silly question,
Thank you in advance for your help,

Sinead Roberts

Sinead Roberts

Re: Cycloid grids

That is great, thanks very much for your help- there is just one more
thing; when you say you define the height of the cycloid as a fraction
of the image width- this is not necessarily the width of the image,
but the fraction of whichever is smaller out of the width/height isn't
it? Or, that is what mine seems to be doing!

Thanks very much.

Sinead

On 17 Nov 2009, at 16:17, Kischell, Eric R. wrote:

> Sinead,
>> how do you calculate the length of the individual cycloid arcs?
> The length of the cycloid per test point is displayed in the Results
> Table (l/p).
> Also,
> Length of Cycloid per Point = 2.0 * cycloidHeight (in physical units)
> for Sequence C
> Length of Cycloid per Point = cycloidHeight (in physical units) for
> Sequence A
>
>> what is the 'image width' they are referring to?
> We define the height of the cycloid as a fraction/ percentage of the
> image width.
> The image width is the width of the current image (ImagePlus).
>
> keesh
> Work Life Plan:
> To improve the quality of life for all mankind through better pattern
> recognition techniques.
> Home Life Plan:
> Married, but happy. Three bright beacons light my way.
> "Life goes by so fast, that if you don't stop and look around, you
> might
> miss it."-- Ferris Bueller
> ===
>
> -----Original Message-----
> From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of
> sinead roberts
> Sent: Monday, November 16, 2009 12:29 PM
> To: [hidden email]
> Subject: Cycloid grids
>
> Dear all,
>
> I am trying to use the cycloid arc plug-in and I was wondering; how do
> you calculate the length of the individual cycloid arcs please? I know
> you input the percent of the image width you wish the height of the
> cycloid to be, but what is the 'image width' they are referring to? It
> cannot be of the whole on screen image, but is it of the 'box' area
> each cycloid is contained within?
>
> I am very sorry if this is a silly question,
> Thank you in advance for your help,
>
> Sinead Roberts

Conor Creedon

Paste issue using the 'setSelectionLocation' function

Hi,

Has anyone come across an issue when trying to paste into a particular
area of an image using the setSelectionLocation function. For some
reason, the paste location always defaults to the centre of the image
for the first occurrence but pastes correctly (into the top left corner
based on the lines below) only on the second occurrence. It is very
frustrating and any workaround would be appreciated!

makeRectangle(100,100,100,100);
run("Copy");
setSelectionLocation(1,1);
run("Paste"); // pastes to centre of image when run
setSelectionLocation(1,1);
run("Paste"); // only now pastes to the top left corner of image when
run

Regards,

Conor.

Michael Schmid

Re: Paste issue using the 'setSelectionLocation' function

Hi Conor,

no problem with the first run("Paste"); on my system (ImageJ 1.43k4,
Java 1.5.0_19, Mac OSX 10.4.11).
Maybe a race condition? You could try adding a wait(100); statement
before run("Paste").

Michael
________________________________________________________________

On 18 Nov 2009, at 15:27, Conor Creedon wrote:

> Hi,
>
> Has anyone come across an issue when trying to paste into a particular
> area of an image using the setSelectionLocation function. For some
> reason, the paste location always defaults to the centre of the image
> for the first occurrence but pastes correctly (into the top left
> corner
> based on the lines below) only on the second occurrence. It is very
> frustrating and any workaround would be appreciated!
>
> makeRectangle(100,100,100,100);
> run("Copy");
> setSelectionLocation(1,1);
> run("Paste"); // pastes to centre of image when run
> setSelectionLocation(1,1);
> run("Paste"); // only now pastes to the top left corner of image when
> run
>
>
> Regards,
>
> Conor.

Kischell, Eric R.

Re: Cycloid grids

In reply to this post by Sinead Roberts

Sinead,

The user can define the height of the cycloid (and as a result, also the
width)
as a percentage of the image width.
The cycloid height is limited to the maximum of the tile height.
See Grid_Cycloid_Arc.java calcCycloidWidthHeightParameters() for
all of the gory details.

>when you say you define the height of the cycloid as a fraction
>of the image width- this is not necessarily the width of the image,
>but the fraction of whichever is smaller out of the width/height isn't

>it? Or, that is what mine seems to be doing!
e.-
===

-----Original Message-----
From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of
sinead roberts
Sent: Wednesday, November 18, 2009 2:23 AM
To: [hidden email]
Subject: Re: Cycloid grids

That is great, thanks very much for your help- there is just one more
thing; when you say you define the height of the cycloid as a fraction
of the image width- this is not necessarily the width of the image,
but the fraction of whichever is smaller out of the width/height isn't
it? Or, that is what mine seems to be doing!

Thanks very much.

Sinead

On 17 Nov 2009, at 16:17, Kischell, Eric R. wrote:

Sinead Roberts

Re: Cycloid grids

That is great, thank you very much, I understand now,

Best
Sinead

On 18 Nov 2009, at 17:31, Kischell, Eric R. wrote:

> Sinead,
>
> The user can define the height of the cycloid (and as a result, also
> the
> width)
> as a percentage of the image width.
> The cycloid height is limited to the maximum of the tile height.
> See Grid_Cycloid_Arc.java calcCycloidWidthHeightParameters() for
> all of the gory details.
>
>> when you say you define the height of the cycloid as a fraction
>> of the image width- this is not necessarily the width of the image,
>> but the fraction of whichever is smaller out of the width/height
>> isn't
>
>> it? Or, that is what mine seems to be doing!
> e.-
> ===
>
> -----Original Message-----
> From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of
> sinead roberts
> Sent: Wednesday, November 18, 2009 2:23 AM
> To: [hidden email]
> Subject: Re: Cycloid grids
>
> That is great, thanks very much for your help- there is just one more
> thing; when you say you define the height of the cycloid as a fraction
> of the image width- this is not necessarily the width of the image,
> but the fraction of whichever is smaller out of the width/height isn't
> it? Or, that is what mine seems to be doing!
>
> Thanks very much.
>
> Sinead
>
>
> On 17 Nov 2009, at 16:17, Kischell, Eric R. wrote:
>
>> Sinead,
>>> how do you calculate the length of the individual cycloid arcs?
>> The length of the cycloid per test point is displayed in the Results
>> Table (l/p).
>> Also,
>> Length of Cycloid per Point = 2.0 * cycloidHeight (in physical units)
>> for Sequence C
>> Length of Cycloid per Point = cycloidHeight (in physical units) for
>> Sequence A
>>
>>> what is the 'image width' they are referring to?
>> We define the height of the cycloid as a fraction/ percentage of the
>> image width.
>> The image width is the width of the current image (ImagePlus).
>>
>> keesh
>> Work Life Plan:
>> To improve the quality of life for all mankind through better pattern
>> recognition techniques.
>> Home Life Plan:
>> Married, but happy. Three bright beacons light my way.
>> "Life goes by so fast, that if you don't stop and look around, you
>> might
>> miss it."-- Ferris Bueller
>> ===
>>
>> -----Original Message-----
>> From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of
>> sinead roberts
>> Sent: Monday, November 16, 2009 12:29 PM
>> To: [hidden email]
>> Subject: Cycloid grids
>>
>> Dear all,
>>
>> I am trying to use the cycloid arc plug-in and I was wondering; how
>> do
>> you calculate the length of the individual cycloid arcs please? I
>> know
>> you input the percent of the image width you wish the height of the
>> cycloid to be, but what is the 'image width' they are referring to?
>> It
>> cannot be of the whole on screen image, but is it of the 'box' area
>> each cycloid is contained within?
>>
>> I am very sorry if this is a silly question,
>> Thank you in advance for your help,
>>
>> Sinead Roberts

Paula Bertacin

Re: Cycloid grids

In reply to this post by Sinead Roberts

Dear all,

I am trying to use the cycloid arc plug-in to measure dendrite processes length and I still have some black points.

1st) One TILE refers to 2 cycloid arcs?
If yes, how do you calculate the length of ONE TILE (composed by 2 arcs)?
And how do you calculate the length of one entire cycloid line?
These measurements are not available at least, I couln´t find them

2nd) How do you express the intercept number obtained?

I very sorry if this is a silly question,
Thank you in advance for your help,

Paula Bertacini