Re: [julia-users] create a multi data type structure in Julia
What I ended up implementing is a dict that can be dynamical created.
Here's the code for it but the dict member are blank initialised.
# names of parameters to be based to make_dictionary
ttype_names_final = {
LAMBDA
EW
SIGMA1_RESULT
SIGMA3_RESULT}
@eval function $(symbol(string(make_dictionary)))()
new_dict = Dict{Symbol,Any}()
println(making new dictionary)
# create new dictionary with each field empty
for sym in ttype_names_final
new_dict[symbol(sym)] = []
end
return new_dict
end
*a = make_dictionary()*
making new dictionary
*Dict{Symbol,Any} with 4 entries:*
* :EW= None[]*
* :LAMBDA= None[]*
* :SIGMA1_RESULT = None[]*
* :SIGMA3_RESULT = None[]*
On Tuesday, February 3, 2015 at 3:07:43 AM UTC+11, alex codoreanu wrote:
Hi Tim,
I am actually trying to use the low-level functionality provided in
FITSIO.jl to write a higher-level function that can deal with fits files
with an unknown number of columns and a mix of datatypes.
Fingers crossed!
On Sunday, February 1, 2015 at 10:33:47 PM UTC+11, Tim Holy wrote:
Have you seen
https://github.com/JuliaAstro/FITSIO.jl
Off-topic, but it would be awesome to have FITS integrated into
Images.jl. I
could help with the integration, but it is pretty well documented:
https://github.com/timholy/Images.jl/blob/master/doc/extendingIO.md
Further discussion could happen at
https://github.com/JuliaAstro/FITSIO.jl/issues/18
--Tim
On Sunday, February 01, 2015 12:35:53 AM alex codoreanu wrote:
Hi all,
I'm a new Julia user and I'm starting to write a high-level multi data
type
fits file reader and writer akin to IDL's mwrfits/mrdfits. I got most
of
the dynamics figured out by I can't quite make a custom structure. For
example, I would like something like:
element = {name::string, lambda::[float_array, 5000 elements],
flux::[float_array, 5000 elements]}
structure = replicate(element, 500)
where structure inherits the members of element and can be called,
structure[1].name = the name of element 1
strucutre[1].lambda[1] = the first lambda element of the first
structure
Thanks !!!
[julia-users] erase previous instance of type
Hi, I am trying to figure out how to erase a previous instance of a type definition. I am writing a function that can dynamically alocate For example: instance 1 type data_return_type spec_name::String lambda::Vector(Float32} spec::Vector(Float32} end
[julia-users] dynamically create a type definition
Hi, I am trying to figure out how to erase a previous instance of a type definition. I am writing a function that can dynamically create a return_type based on the variables passed to it. For example: instance 1 type data_return_type spec_name::String lambda::Vector(Float32} spec::Vector(Float32} end instance 2 type data_return_type spec_name::String lambda::Vector(Float32} spec::Vector(Float32} continuum::Vector(Float32} end The problem I am having is that I get the message: Invalid redefinition of constant type data_return_type so I would like to erase the previous instance of data_return_type or is there a more traditional way to create a structure? Thank you!
Re: [julia-users] create a multi data type structure in Julia
Hi Tim,
I am actually trying to use the low-level functionality provided in
FITSIO.jl to write a higher-level function that can deal with fits files
with an unknown number of columns and a mix of datatypes.
Fingers crossed!
On Sunday, February 1, 2015 at 10:33:47 PM UTC+11, Tim Holy wrote:
Have you seen
https://github.com/JuliaAstro/FITSIO.jl
Off-topic, but it would be awesome to have FITS integrated into Images.jl.
I
could help with the integration, but it is pretty well documented:
https://github.com/timholy/Images.jl/blob/master/doc/extendingIO.md
Further discussion could happen at
https://github.com/JuliaAstro/FITSIO.jl/issues/18
--Tim
On Sunday, February 01, 2015 12:35:53 AM alex codoreanu wrote:
Hi all,
I'm a new Julia user and I'm starting to write a high-level multi data
type
fits file reader and writer akin to IDL's mwrfits/mrdfits. I got most of
the dynamics figured out by I can't quite make a custom structure. For
example, I would like something like:
element = {name::string, lambda::[float_array, 5000 elements],
flux::[float_array, 5000 elements]}
structure = replicate(element, 500)
where structure inherits the members of element and can be called,
structure[1].name = the name of element 1
strucutre[1].lambda[1] = the first lambda element of the first structure
Thanks !!!
Re: [julia-users] dynamically create a type definition
Hi Kyle, DataFrames is an option if I restructure my data around it. This structure issue is important for the data.fits file reader but Stefan had a good suggestion about wrapping up the type definition in a module call. However, it's getting close to sun-up in Australia so I'll sleep on it for a bit. Alex On Tuesday, February 3, 2015 at 3:39:19 AM UTC+11, Kyle Barbary wrote: Hi Alex, Correct me if I'm wrong, but I think what you're looking for is the equivalent of a numpy structured array: an array where each element is a composite data structure. Normally in Julia, you'd use an array of your custom type to achieve this. However, the desire here is that the fields and types of the data structure can be determined at runtime according to the contents of a file, for example. You might want to look at the DataFrames package, and particularly at this issue: https://github.com/JuliaStats/DataFrames.jl/issues/744 - Kyle On Mon, Feb 2, 2015 at 8:15 AM, alex codoreanu alex.co...@gmail.com javascript: wrote: Hi, I am trying to figure out how to erase a previous instance of a type definition. I am writing a function that can dynamically create a return_type based on the variables passed to it. For example: instance 1 type data_return_type spec_name::String lambda::Vector(Float32} spec::Vector(Float32} end instance 2 type data_return_type spec_name::String lambda::Vector(Float32} spec::Vector(Float32} continuum::Vector(Float32} end The problem I am having is that I get the message: Invalid redefinition of constant type data_return_type so I would like to erase the previous instance of data_return_type or is there a more traditional way to create a structure? Thank you!
[julia-users] create a multi data type structure in Julia
Hi all,
I'm a new Julia user and I'm starting to write a high-level multi data type
fits file reader and writer akin to IDL's mwrfits/mrdfits. I got most of
the dynamics figured out by I can't quite make a custom structure. For
example, I would like something like:
element = {name::string, lambda::[float_array, 5000 elements],
flux::[float_array, 5000 elements]}
structure = replicate(element, 500)
where structure inherits the members of element and can be called,
structure[1].name = the name of element 1
strucutre[1].lambda[1] = the first lambda element of the first structure
Thanks !!!
Re: [julia-users] create a multi data type structure in Julia
Thanks Milan,
I defined Element as you suggested and created
*data=(Element, 2)*
but
*julia **data[1].lambda=[1., 2.0]*
*ERROR: type DataType has no field lambda*
Now that I have the structure data how do I access the branch members?
On Sunday, February 1, 2015 at 8:07:51 PM UTC+11, Milan Bouchet-Valat wrote:
Le dimanche 01 février 2015 à 00:35 -0800, alex codoreanu a écrit :
Hi all,
I'm a new Julia user and I'm starting to write a high-level multi data
type fits file reader and writer akin to IDL's mwrfits/mrdfits. I got
most of the dynamics figured out by I can't quite make a custom
structure. For example, I would like something like:
element = {name::string, lambda::[float_array, 5000 elements],
flux::[float_array, 5000 elements]}
structure = replicate(element, 500)
where structure inherits the members of element and can be called,
structure[1].name = the name of element 1
strucutre[1].lambda[1] = the first lambda element of the first
structure
Looks like a composite type would work:
type Element
name::UTF8String
lambda::Vector{Float64}
flux::Vector{Float64}
end
Regards
Re: [julia-users] create a multi data type structure in Julia
That worked but I had to use:
data = Array(Element, 2)
Thanks for the info!
On Sunday, February 1, 2015 at 8:57:23 PM UTC+11, Milan Bouchet-Valat wrote:
Le dimanche 01 février 2015 à 01:24 -0800, alex codoreanu a écrit :
Thanks Milan,
I defined Element as you suggested and created
data=(Element, 2)
What is this line supposed to do? All it does now is assign a tuple
containing the Element type, and the integer value 2.
If you want to create an Element instance, you should do e.g.:
element = Element(a name, [1, 2], [2, 3])
and then to create a list holding two Elements, and fill the first value
with the just created element:
data = Vector(Element, 2)
data[1] = element
Accessing members:
data[1].lambda
Regards
but
julia data[1].lambda=[1., 2.0]
ERROR: type DataType has no field lambda
Now that I have the structure data how do I access the branch members?
On Sunday, February 1, 2015 at 8:07:51 PM UTC+11, Milan Bouchet-Valat
wrote:
Le dimanche 01 février 2015 à 00:35 -0800, alex codoreanu a
écrit :
Hi all,
I'm a new Julia user and I'm starting to write a high-level
multi data
type fits file reader and writer akin to IDL's
mwrfits/mrdfits. I got
most of the dynamics figured out by I can't quite make a
custom
structure. For example, I would like something like:
element = {name::string, lambda::[float_array, 5000
elements],
flux::[float_array, 5000 elements]}
structure = replicate(element, 500)
where structure inherits the members of element and can be
called,
structure[1].name = the name of element 1
strucutre[1].lambda[1] = the first lambda element of the
first
structure
Looks like a composite type would work:
type Element
name::UTF8String
lambda::Vector{Float64}
flux::Vector{Float64}
end
Regards
[julia-users] Re: Adding Custom .jl through module calls
Thanks Mauro, alex.readcol() worked ! *julia **a=alex.readcol(name_of_file)* the object returned is a 10201.0 x 3 matrix On Tuesday, January 27, 2015 at 9:19:22 PM UTC+11, alex codoreanu wrote: Hi guys, I'm a new user, 1st week :) and I am having trouble properly accessing some functions that I built. One of them is akin to IDL's readcol.pro. My module definition for alex.jl *module alex* *include(/Users/alex/CODES/Julia_Custom_jl/alex/src/readcol.jl)* *println(alex_module_loaded)* *end* After *julia **using alex* alex_module_loaded *julia **readcol()* *ERROR: readcol not defined* the path and include is correct *julia * *include(/Users/alex/CODES/Julia_Custom_jl/alex/src/readcol.jl)* *readcol (generic function with 1 method)* so it looks like it might be a scope issue. I basically want to have access to readcol() after loading my custom module. Thank you.
[julia-users] Adding Custom .jl through module calls
Hi guys, I'm a new user, 1st week :) and I am having trouble properly accessing some functions that I built. One of them is akin to IDL's readcol.pro. My module definition for alex.jl *module alex* *include(/Users/alex/CODES/Julia_Custom_jl/alex/src/readcol.jl)* *println(alex_module_loaded)* *end* After *julia **using alex* alex_module_loaded *julia **readcol()* *ERROR: readcol not defined* the path and include is correct *julia **include(/Users/alex/CODES/Julia_Custom_jl/alex/src/readcol.jl)* *readcol (generic function with 1 method)* so it looks like it might be a scope issue. I basically want to have access to readcol() after loading my custom module. Thank you.
