# desert_scientist90

Graduate research assistant in environmental health sciences

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**Content Feed**

Question

How to add a second Y axis to a bar chart?

Hi all , I am trying to make a bar chart with readings of particulate matter. Since one of my observations is an outlier my grap...

nästan 2 år ago | 1 answer | 0

### 1

answerQuestion

Adding time (time stamp) to observations

Hi I have a quesion regarding the creation of a time variable with increments of every 10 seconds ( I am trying to do a time ser...

nästan 2 år ago | 1 answer | 0

### 1

answerQuestion

How to loop time ( hours and minutes ) in a data set

Hi all, I am working with a 264,xxx *12 dataset, I imported them to matlab as column vectors due to the nature of the sampling ...

nästan 2 år ago | 1 answer | 0

### 1

answerQuestion

selecting rows from column vectors

Hi all, I have 10 column vectors with 52,520 observations. I want to extract expecfic observation rows per column vectors, I am ...

nästan 2 år ago | 1 answer | 0

### 1

answerQuestion

Obslabel error when using biplot

Hi I have a biplot with the PCA results from 9 houses and 14 variables. I am trying to label my scores with the correspondent ch...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Biplot label error after following matlab help guide

Hi I am trying to display the results of my PCA analysis on a biplot by following the example on https://www.mathworks.com/help/...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Time stamp for discrete Fourier transform

Hi all, I am trying to create a time stamp for my weather data. I took my readings every three hours for simplicity sake lets s...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

How to add plot points in my map?

Hi all I am trying learn how to do a map with the air stations located on Pima county. I have the county already my question is...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

How to map US cities in matlab using mapping toolbox?

Hi All, I am trying to do a map from the city of Tucson in matlab. So far no luck I was looking on the examples for USAmaps ...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

How to manipulate matrices to get the same dimensions?

Hi I am trying to perform a regression analysis between two matrices. The first one has the dimensions of 145*35*40 when reshape...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

normalize values from svd matrix

Hi all, I am working with SVD analysis and I got my principal component values on U ( this is from the routine [u,s,v]=svd(x)) ...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Unable to perform assignment because brace indexing is not supported for variables of this type

Hi all I am trying to compute the local significance at each grid point of my data set by using a student's t-test. If I run ...

mer än 2 år ago | 0 answers | 0

### 0

answersQuestion

T-test cutoff

Hi all, I am currently working with a data set that will be displayed on a map. After I calculated the t-value I decided that ...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Error when building a array code

Hi I all, I am new to matlab I am trying to display the result of zm3(result from the high composite-low/2) at each grid point...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Help doing array to display values on map

Hi I am trying to do an array that will calculate the mean value of the high composite minus the low composite divided by two. ...

mer än 2 år ago | 0 answers | 0

### 0

answersQuestion

Adding and subtracting values inside tables

Hi all, I have to tables one with the high values in x= amount of years , the other table with the low values for x= amount of...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

How to get rid of Nan when calculating mean

Hi I am trying to get rid of the nan's on my mean calculation, if I keep them I wont be able to calculate z-scores. I was using ...

mer än 2 år ago | 3 answers | 0

### 3

answersQuestion

Calculating anomalies to create a map

Hi all, I have the zscores for the years with high precipitation and low precipitation I am trying to calculate the difference ...

mer än 2 år ago | 0 answers | 0

### 0

answersQuestion

Getting the low and high years

Hi I have a table with z-scores per year, I am trying to get the z-scores with values greater that 1 and lower than -1. How can ...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Adding years to matrix

Hi all, I am newbie on matlab, I have a dataset for precipitation with a grid of 0.5 spacing x=141, y=71 and t=38. I calculate...

mer än 2 år ago | 0 answers | 0

### 0

answersQuestion

Stuck in endless loop

Hi all, I am learning matlab thru practice and patience. I am trying to create a loop to get the mean of a precipitation datas...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Calculating the average every three months

Hi all, I leaning matlab thru practice and patience, I have the following dataset with sunspot observations for 38 years. I am t...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Mean of the third dimension

Hi I an new to matlab and learning thru practice and patience. I have a data set with for precipitation containing data for 37 y...

mer än 2 år ago | 2 answers | 0

### 2

answersQuestion

Z- score of a multidimensional array

Hi I am new to matlab. I have a data set on a grid at 0.5 with x 141 y, 71 and x38. I am trying to get z scores for this multidi...

mer än 2 år ago | 0 answers | 0

### 0

answersQuestion

Finding high and low z cores on a data set

Hi I have a data set on a 0.5 grid, the dimension for x is 141, y is 71 and t is 38. I got the z scores and I squeeze them to ge...

mer än 2 år ago | 0 answers | 0

### 0

answersQuestion regarding data grid

I am trying to have one line for the 38 years which I got earlier but with the frequency which is 2698 instead of the years. Whe...

mer än 2 år ago | 0

Question

Question regarding data grid

Hi I have a data set on a 0.5 grid, the dimension for x is 141, y is 71 and t is 38. I am trying to calculate the z score which ...

mer än 2 år ago | 2 answers | 0

### 2

answersQuestion

data import error in line 1

Hi I am trying to import a excel document to matlab by using the code below. However I am getting the message error in line one....

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

Error Histfit too many arguments

Hi I am trying to overlay a normal distribution and a gamma distribution in the same histogram. I am using the following code wh...

mer än 2 år ago | 1 answer | 0

### 1

answerQuestion

zeros in data for gamma distribution

Hi, I am working with a large weather data set. I am trying to create a histogram with a gamma distrubution. This is not possibl...

mer än 2 år ago | 1 answer | 0