Accuracy assessment in Ecognition software 9.0.1?

I did segmentation and classification of landsat 7 image in Ecognition 9.0.1, but the accuracy results repeatedly give 100% (1). I tried both confusion matrix based on samples, and TTA mask but...

10 November 2017 1,064 0 View

How can i estimate land surface temperature from atmospherically corrected landsat 7ETM+?

04 May 2017 8,405 5 View

Please can someone help with anomally detection methods for series of values?

I have ndvi values from series of points obtained from time series satellite images. How can i detect anomally from these values? Thanks

04 May 2017 1,092 7 View

Are there methods of validation for classification of satellite images, change detection & LST maps in the absence of landuse and national topomaps?

HI please I have classified my satellite images, done change detection and produced my Land Surface Temperature maps, but I have no access the landuse data and the national topomaps of the study...

31 December 2016 6,726 12 View

Please is there anyway to generate DTM from SRTM30? If yes how accurate is it?

II need to generate DTM for my study area in Nigeria, but the only data I have is SRTM30. Kindly help with a way out. Thanks

31 December 2016 9,022 2 View

Hi please I need information on Vulnerability curves and damage function, including methods, applications and parameters?

31 December 2016 3,148 2 View

Where can I get free land surface temperature data?

I need to observe the changes in land surface temperature due to oil spill, thanks

10 November 2015 3,448 2 View

Please how can I segment landsat image in ecognition software? Please highlight the value for scale parameter, shape & compactness (for LULC changes)?

I am new to the software and i have to observe contamination due to oil spill in series of years, using landsat images. Hence i want to segment different LULC for each year, including oil facility...

09 October 2015 4,891 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

How to arrange coordinates and extract climate dataset out of MPI-ESM-MR netcdf files?

Have a nice day everyone, I'm stuck in extracting datasets out of MPI-ESM-MR netcdf files because the latitude ranges from -3*10^6 to 3*10^6 and longitude ranges -5,9*10^6 to 5,9*10^6. Plus, the...

28 February 2021 912 3 View