BertG> -Original Message- From:
>>BertG> r-help-boun...@r-project.org
>> BertG> [mailto:r-help-boun...@r-project.org] On Behalf Of
>>BertG> Steve Lianoglou Sent: Monday, July 27, 2009 3:17 PM
>>BertG> To: Mehdi Khan Cc: r-help@r
Behalf Of
> BertG> Steve Lianoglou Sent: Monday, July 27, 2009 3:17 PM
>BertG> To: Mehdi Khan Cc: r-help@r-project.org Subject: Re:
>BertG> [R] Searching for specific values in a matrix
>
>BertG> Ahh ..
>
>BertG> On Jul 27, 2009, at 6:01 PM,
Yes this is working quite well. Basically, I am comparing data obtained from
GIS to data obtained from R. It's turning out that the latitude and
longitude values from GIS are not matching exactly those obtained in R, and
therefore
I am trying to find the variance in the data.
On Tue, Jul 28, 2009
quick question, i am trying to get an interval of values now with
this code by toggling the tolerance limit. is there any way i can
modify this code to find values which are within limits of BOTH
latitude and longitude? currently i have to pick one or the other.
It's not really clear wher
iginal Message- From:
BertG> r-help-boun...@r-project.org
BertG> [mailto:r-help-boun...@r-project.org] On Behalf Of
BertG> Steve Lianoglou Sent: Monday, July 27, 2009 3:17 PM
BertG> To: Mehdi Khan Cc: r-help@r-project.org Subject: Re:
BertG> [R] Searching for spe
Even when choosing a value from the first few rows, it doesn't work. okay
here it goes:
> rearranged[1:10, 1:5]
xy band1 VSCAT.001 soiltype
1 -124.3949 40.42468NANA CD
2 -124.3463 40.27358NANA CD
3 -124.3357 40.25226NANA C
it worked! thank you so much!!
On Mon, Jul 27, 2009 at 3:16 PM, Steve Lianoglou <
mailinglist.honey...@gmail.com> wrote:
> Ahh ..
>
> On Jul 27, 2009, at 6:01 PM, Mehdi Khan wrote:
>
> Even when choosing a value from the first few rows, it doesn't work. okay
>> here it goes:
>>
>> > rearranged[1
no luck, it's okay, i will figure it out! i might isolate and recombine all
the columns, maybe that will work. thanks for the help!
On Mon, Jul 27, 2009 at 1:00 PM, Steve Lianoglou <
mailinglist.honey...@gmail.com> wrote:
>
> On Jul 27, 2009, at 3:50 PM, Mehdi Khan wrote:
>
> the problem is, i
the problem is, it works with the example data i gave. however, it does NOT
work with the data set i have, which is 600,000 rows. the class is still a
data frame.
On Mon, Jul 27, 2009 at 12:15 PM, Steve Lianoglou <
mailinglist.honey...@gmail.com> wrote:
>
> On Jul 27, 2009, at 2:54 PM, Mehdi Kh
Monday, July 27, 2009 3:17 PM
To: Mehdi Khan
Cc: r-help@r-project.org
Subject: Re: [R] Searching for specific values in a matrix
Ahh ..
On Jul 27, 2009, at 6:01 PM, Mehdi Khan wrote:
> Even when choosing a value from the first few rows, it doesn't work.
> okay here it goes:
Ahh ..
On Jul 27, 2009, at 6:01 PM, Mehdi Khan wrote:
Even when choosing a value from the first few rows, it doesn't work.
okay here it goes:
> rearranged[1:10, 1:5]
xy band1 VSCAT.001 soiltype
1 -124.3949 40.42468NANA CD
2 -124.3463 40.27358NA
no luck, it's okay, i will figure it out! i might isolate and
recombine all the columns, maybe that will work. thanks for the help!
No, wait .. no luck in being able to select out rows from your
data.frame using values you see somewhere in the top 10 rows?
Can you just paste in some key l
On Jul 27, 2009, at 3:50 PM, Mehdi Khan wrote:
the problem is, it works with the example data i gave. however, it
does NOT work with the data set i have, which is 600,000 rows. the
class is still a data frame.
So the problem must be in your data, or what you think is in your
data. Some
On Jul 27, 2009, at 2:54 PM, Mehdi Khan wrote:
i am able to return the first column, but anything else returns this:
<0 rows> (or 0-length row.names)
any idea?
I'm not sure what you're doing.
The result you're getting happens when no rows "pass" the logical test
that you are using to inde
i am able to return the first column, but anything else returns this:
<0 rows> (or 0-length row.names)
any idea?
On Tue, Jul 21, 2009 at 12:49 PM, Steve Lianoglou <
mailinglist.honey...@gmail.com> wrote:
>
> On Jul 21, 2009, at 3:27 PM, Mehdi Khan wrote:
>
> I understand your explanation about
thank you VERY much, I have to run now, but I will look at this in the next
few days (going on a field trip). I really appreciate it!
Mehdi Khan
On Tue, Jul 21, 2009 at 12:49 PM, Steve Lianoglou <
mailinglist.honey...@gmail.com> wrote:
>
> On Jul 21, 2009, at 3:27 PM, Mehdi Khan wrote:
>
> I u
I understand your explanation about the test for even numbers. However I am
still a bit confused as to how to go about finding a particular value. Here
is an example data set
col # attr1attr2 attr 3LONLAT
17209 DNANA -122.9409 38.27645
17210
I am a bit confused as to what the following command does:
evens <- df$nums %% 2 == 0
In my matrix example, let's say I am looking for the variable(s) BC and I
want R to return all the rows with that value... or If I want a value such
as 33.543. How would I get it to do that? Just a single valu
On Jul 21, 2009, at 3:27 PM, Mehdi Khan wrote:
I understand your explanation about the test for even numbers.
However I am still a bit confused as to how to go about finding a
particular value. Here is an example data set
col # attr1attr2 attr 3LONLAT
17209
I am a bit confused as to what the following command does:
evens <- df$nums %% 2 == 0
It returns a logical vector (I'm calling this an "indexing vector")
that is TRUE where df$nums %% 2 == 0 (%% is modulo division, and 4 mod
2 == 0 -- so it's a test for "being even")
In my matrix example,
Hi,
On Jul 21, 2009, at 1:47 PM, Mehdi Khan wrote:
Hello all,
I have a seemingly simple question which I have searched for an
answer for
for a few hours without luck. I have a matrix of both values and
characters
with thousands of rows. I would like to run a search of this matrix
for
c
On Jul 21, 2009, at 1:47 PM, Mehdi Khan wrote:
Hello all,
I have a seemingly simple question which I have searched for an
answer for
for a few hours without luck. I have a matrix of both values and
characters
with thousands of rows. I would like to run a search of this matrix
for
certa
Hello all,
I have a seemingly simple question which I have searched for an answer for
for a few hours without luck. I have a matrix of both values and characters
with thousands of rows. I would like to run a search of this matrix for
certain values and would like the search to retrieve the entir
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