[Radiance-general] how to pipe the output of pcompos as input for pflip

[Ji Zhang]

Thanks, Greg and Tim!

Can you kindly explain the "reversing the order of operation" approach? Do
you mean flipping the image first before cropping it?

BTW, it seems that the horizontally flipped .hdr image created by pflip
cannot be correctly displayed in PhotosphereU application on Mac system.
What is shown in PhotosphereU is still the original one before flipping.
However, the flipped image can be correctly displayed in Photoshop. I'm not
sure if there's something wrong with my Mac system because the flipped .hdr
image can't be properly previewed either...

Please kindly advise!

The original hdr image:
https://sites.google.com/site/episodehopezh/files/original.hdr?attredirects=0&d=1

The flipped hdr image:
https://sites.google.com/site/episodehopezh/files/flipped.hdr?attredirects=0&d=1


- Cheers, Ji



On Fri, May 18, 2012 at 5:14 AM, Greg Ward <gregoryjward at gmail.com> wrote:

> The C file goes in src/px -- if you didn't compile Radiance, though, it
> won't do you much good.
>
> Tim's idea of reversing the order of operations should work, since
> falsecolor can read from a pipe.  Or, you could create a temporary file and
> use the version of pflip you have.
>
> -Greg
>
>
> *From: *Tim Perry <tim.v2.0 at gmail.com>
>
> *Date: *May 17, 2012 12:59:48 PM PDT
>
> *
> *
>
> Ji,
>
> what if you just reverse the order of the two operations?
>
> Tim
>
>
> On Thu, May 17, 2012 at 12:13 PM, Ji Zhang <hope.zh at gmail.com> wrote:
>
>> Dear Greg, thank you very much!
>>
>> I've got the C file you sent. However, I have no experience in C
>> programming. So, can you kindly advise me how should I "compile" or "do
>> with" it?
>>
>> What I want to do is to get a falsecolor sky radiance fisheye image and
>> map it back to a virtual sky dome. See the link below:
>>
>> http://diva4rhino.com/forum/topics/gendaylit-in-diva-2-0-seriously-underesitmates-total-irradiation
>>
>> Since the falsecolor image I generated from falsecolor2.exe is one with
>> East and West switched, I need to crop it to get ride of the color legend
>> and flip horizontally it so that East and West are correctly visualized.
>>
>> Thanks again!
>>
>> - Ji
>>
>>
>>
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